diff --git a/client/server.go b/client/server.go
index e251843..30c1330 100644
--- a/client/server.go
+++ b/client/server.go
@@ -100,6 +100,24 @@ func (ints *InternalServer) BuildMessageRequestMessage(lookupKeys []string) ([]b
 	return out, nil
 }
 
+// Creates a basic message to server from a single packed user message and returns it as protobuf serialized byte array
+func (ints *InternalServer) BuildToServerMessageInvitation(invitation *meowlib.ContactCard, password string, timeout int, urllen int) (*meowlib.ToServerMessage, error) {
+	var msg meowlib.ToServerMessage
+	var inv meowlib.Invitation
+	payload, err := invitation.Compress()
+	if err != nil {
+		return nil, err
+	}
+	msg.Type = "1"
+	msg.From = ints.Me.Public
+	inv.Password = password
+	inv.Timeout = int32(timeout)
+	inv.Urllen = int32(urllen)
+	inv.Payload = payload
+	msg.Invitation = &inv
+	return &msg, nil
+}
+
 func (ints *InternalServer) PackServerMessage(payload []byte, signature []byte) (protoPackedMessage []byte, err error) {
 	var msg meowlib.PackedServerMessage
 	msg.From = ints.Me.Public
diff --git a/messages.pb.go b/messages.pb.go
index 40009a6..b65ab4e 100644
--- a/messages.pb.go
+++ b/messages.pb.go
@@ -90,6 +90,94 @@ func (x *PackedServerMessage) GetSignature() []byte {
 	return nil
 }
 
+// structure to hold an invitation through a server
+type Invitation struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Payload  []byte `protobuf:"bytes,1,opt,name=payload,proto3" json:"payload,omitempty"`
+	Timeout  int32  `protobuf:"varint,2,opt,name=timeout,proto3" json:"timeout,omitempty"`
+	Urllen   int32  `protobuf:"varint,3,opt,name=urllen,proto3" json:"urllen,omitempty"`
+	Password string `protobuf:"bytes,4,opt,name=password,proto3" json:"password,omitempty"`
+	Url      string `protobuf:"bytes,5,opt,name=url,proto3" json:"url,omitempty"`
+	Expiry   int64  `protobuf:"varint,6,opt,name=expiry,proto3" json:"expiry,omitempty"`
+}
+
+func (x *Invitation) Reset() {
+	*x = Invitation{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messages_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Invitation) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Invitation) ProtoMessage() {}
+
+func (x *Invitation) ProtoReflect() protoreflect.Message {
+	mi := &file_messages_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Invitation.ProtoReflect.Descriptor instead.
+func (*Invitation) Descriptor() ([]byte, []int) {
+	return file_messages_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *Invitation) GetPayload() []byte {
+	if x != nil {
+		return x.Payload
+	}
+	return nil
+}
+
+func (x *Invitation) GetTimeout() int32 {
+	if x != nil {
+		return x.Timeout
+	}
+	return 0
+}
+
+func (x *Invitation) GetUrllen() int32 {
+	if x != nil {
+		return x.Urllen
+	}
+	return 0
+}
+
+func (x *Invitation) GetPassword() string {
+	if x != nil {
+		return x.Password
+	}
+	return ""
+}
+
+func (x *Invitation) GetUrl() string {
+	if x != nil {
+		return x.Url
+	}
+	return ""
+}
+
+func (x *Invitation) GetExpiry() int64 {
+	if x != nil {
+		return x.Expiry
+	}
+	return 0
+}
+
 // structure defining a message for a server, that will be encrypted, then sent in a "packedmessage" payload
 type ToServerMessage struct {
 	state         protoimpl.MessageState
@@ -104,12 +192,13 @@ type ToServerMessage struct {
 	KnownServers      []*Server                              `protobuf:"bytes,6,rep,name=knownServers,proto3" json:"knownServers,omitempty"`
 	MatriochkaMessage *Matriochka                            `protobuf:"bytes,7,opt,name=matriochkaMessage,proto3" json:"matriochkaMessage,omitempty"`
 	Uuid              string                                 `protobuf:"bytes,8,opt,name=uuid,proto3" json:"uuid,omitempty"`
+	Invitation        *Invitation                            `protobuf:"bytes,9,opt,name=invitation,proto3" json:"invitation,omitempty"`
 }
 
 func (x *ToServerMessage) Reset() {
 	*x = ToServerMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_messages_proto_msgTypes[1]
+		mi := &file_messages_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -122,7 +211,7 @@ func (x *ToServerMessage) String() string {
 func (*ToServerMessage) ProtoMessage() {}
 
 func (x *ToServerMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_messages_proto_msgTypes[1]
+	mi := &file_messages_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -135,7 +224,7 @@ func (x *ToServerMessage) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ToServerMessage.ProtoReflect.Descriptor instead.
 func (*ToServerMessage) Descriptor() ([]byte, []int) {
-	return file_messages_proto_rawDescGZIP(), []int{1}
+	return file_messages_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *ToServerMessage) GetType() string {
@@ -194,6 +283,13 @@ func (x *ToServerMessage) GetUuid() string {
 	return ""
 }
 
+func (x *ToServerMessage) GetInvitation() *Invitation {
+	if x != nil {
+		return x.Invitation
+	}
+	return nil
+}
+
 // structure defining a from server receiver message decrypted from a "packedmessage" payload
 type FromServerMessage struct {
 	state         protoimpl.MessageState
@@ -207,12 +303,13 @@ type FromServerMessage struct {
 	ServerUuid      string               `protobuf:"bytes,5,opt,name=serverUuid,proto3" json:"serverUuid,omitempty"`           // Provides the server uuid that replaced the client uuid
 	Chat            []*PackedUserMessage `protobuf:"bytes,6,rep,name=chat,proto3" json:"chat,omitempty"`
 	KnownServers    []*Server            `protobuf:"bytes,7,rep,name=knownServers,proto3" json:"knownServers,omitempty"`
+	Invitation      *Invitation          `protobuf:"bytes,8,opt,name=invitation,proto3" json:"invitation,omitempty"`
 }
 
 func (x *FromServerMessage) Reset() {
 	*x = FromServerMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_messages_proto_msgTypes[2]
+		mi := &file_messages_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -225,7 +322,7 @@ func (x *FromServerMessage) String() string {
 func (*FromServerMessage) ProtoMessage() {}
 
 func (x *FromServerMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_messages_proto_msgTypes[2]
+	mi := &file_messages_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -238,7 +335,7 @@ func (x *FromServerMessage) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use FromServerMessage.ProtoReflect.Descriptor instead.
 func (*FromServerMessage) Descriptor() ([]byte, []int) {
-	return file_messages_proto_rawDescGZIP(), []int{2}
+	return file_messages_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *FromServerMessage) GetType() string {
@@ -290,6 +387,13 @@ func (x *FromServerMessage) GetKnownServers() []*Server {
 	return nil
 }
 
+func (x *FromServerMessage) GetInvitation() *Invitation {
+	if x != nil {
+		return x.Invitation
+	}
+	return nil
+}
+
 type MatriochkaServer struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -304,7 +408,7 @@ type MatriochkaServer struct {
 func (x *MatriochkaServer) Reset() {
 	*x = MatriochkaServer{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_messages_proto_msgTypes[3]
+		mi := &file_messages_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -317,7 +421,7 @@ func (x *MatriochkaServer) String() string {
 func (*MatriochkaServer) ProtoMessage() {}
 
 func (x *MatriochkaServer) ProtoReflect() protoreflect.Message {
-	mi := &file_messages_proto_msgTypes[3]
+	mi := &file_messages_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -330,7 +434,7 @@ func (x *MatriochkaServer) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use MatriochkaServer.ProtoReflect.Descriptor instead.
 func (*MatriochkaServer) Descriptor() ([]byte, []int) {
-	return file_messages_proto_rawDescGZIP(), []int{3}
+	return file_messages_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *MatriochkaServer) GetUrl() string {
@@ -375,7 +479,7 @@ type Matriochka struct {
 func (x *Matriochka) Reset() {
 	*x = Matriochka{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_messages_proto_msgTypes[4]
+		mi := &file_messages_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -388,7 +492,7 @@ func (x *Matriochka) String() string {
 func (*Matriochka) ProtoMessage() {}
 
 func (x *Matriochka) ProtoReflect() protoreflect.Message {
-	mi := &file_messages_proto_msgTypes[4]
+	mi := &file_messages_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -401,7 +505,7 @@ func (x *Matriochka) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Matriochka.ProtoReflect.Descriptor instead.
 func (*Matriochka) Descriptor() ([]byte, []int) {
-	return file_messages_proto_rawDescGZIP(), []int{4}
+	return file_messages_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *Matriochka) GetLookupKey() string {
@@ -450,7 +554,7 @@ type Server struct {
 func (x *Server) Reset() {
 	*x = Server{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_messages_proto_msgTypes[5]
+		mi := &file_messages_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -463,7 +567,7 @@ func (x *Server) String() string {
 func (*Server) ProtoMessage() {}
 
 func (x *Server) ProtoReflect() protoreflect.Message {
-	mi := &file_messages_proto_msgTypes[5]
+	mi := &file_messages_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -476,7 +580,7 @@ func (x *Server) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Server.ProtoReflect.Descriptor instead.
 func (*Server) Descriptor() ([]byte, []int) {
-	return file_messages_proto_rawDescGZIP(), []int{5}
+	return file_messages_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *Server) GetName() string {
@@ -546,7 +650,7 @@ type ContactCard struct {
 func (x *ContactCard) Reset() {
 	*x = ContactCard{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_messages_proto_msgTypes[6]
+		mi := &file_messages_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -559,7 +663,7 @@ func (x *ContactCard) String() string {
 func (*ContactCard) ProtoMessage() {}
 
 func (x *ContactCard) ProtoReflect() protoreflect.Message {
-	mi := &file_messages_proto_msgTypes[6]
+	mi := &file_messages_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -572,7 +676,7 @@ func (x *ContactCard) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ContactCard.ProtoReflect.Descriptor instead.
 func (*ContactCard) Descriptor() ([]byte, []int) {
-	return file_messages_proto_rawDescGZIP(), []int{6}
+	return file_messages_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *ContactCard) GetName() string {
@@ -639,7 +743,7 @@ type PackedUserMessage struct {
 func (x *PackedUserMessage) Reset() {
 	*x = PackedUserMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_messages_proto_msgTypes[7]
+		mi := &file_messages_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -652,7 +756,7 @@ func (x *PackedUserMessage) String() string {
 func (*PackedUserMessage) ProtoMessage() {}
 
 func (x *PackedUserMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_messages_proto_msgTypes[7]
+	mi := &file_messages_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -665,7 +769,7 @@ func (x *PackedUserMessage) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PackedUserMessage.ProtoReflect.Descriptor instead.
 func (*PackedUserMessage) Descriptor() ([]byte, []int) {
-	return file_messages_proto_rawDescGZIP(), []int{7}
+	return file_messages_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *PackedUserMessage) GetDestination() string {
@@ -718,7 +822,7 @@ type UserMessage struct {
 func (x *UserMessage) Reset() {
 	*x = UserMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_messages_proto_msgTypes[8]
+		mi := &file_messages_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -731,7 +835,7 @@ func (x *UserMessage) String() string {
 func (*UserMessage) ProtoMessage() {}
 
 func (x *UserMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_messages_proto_msgTypes[8]
+	mi := &file_messages_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -744,7 +848,7 @@ func (x *UserMessage) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UserMessage.ProtoReflect.Descriptor instead.
 func (*UserMessage) Descriptor() ([]byte, []int) {
-	return file_messages_proto_rawDescGZIP(), []int{8}
+	return file_messages_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *UserMessage) GetDestination() string {
@@ -838,7 +942,7 @@ type File struct {
 func (x *File) Reset() {
 	*x = File{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_messages_proto_msgTypes[9]
+		mi := &file_messages_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -851,7 +955,7 @@ func (x *File) String() string {
 func (*File) ProtoMessage() {}
 
 func (x *File) ProtoReflect() protoreflect.Message {
-	mi := &file_messages_proto_msgTypes[9]
+	mi := &file_messages_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -864,7 +968,7 @@ func (x *File) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use File.ProtoReflect.Descriptor instead.
 func (*File) Descriptor() ([]byte, []int) {
-	return file_messages_proto_rawDescGZIP(), []int{9}
+	return file_messages_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *File) GetFilename() string {
@@ -909,7 +1013,7 @@ type Location struct {
 func (x *Location) Reset() {
 	*x = Location{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_messages_proto_msgTypes[10]
+		mi := &file_messages_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -922,7 +1026,7 @@ func (x *Location) String() string {
 func (*Location) ProtoMessage() {}
 
 func (x *Location) ProtoReflect() protoreflect.Message {
-	mi := &file_messages_proto_msgTypes[10]
+	mi := &file_messages_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -935,7 +1039,7 @@ func (x *Location) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Location.ProtoReflect.Descriptor instead.
 func (*Location) Descriptor() ([]byte, []int) {
-	return file_messages_proto_rawDescGZIP(), []int{10}
+	return file_messages_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *Location) GetTime() uint64 {
@@ -981,7 +1085,7 @@ type ToServerMessage_ConversationRequest struct {
 func (x *ToServerMessage_ConversationRequest) Reset() {
 	*x = ToServerMessage_ConversationRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_messages_proto_msgTypes[11]
+		mi := &file_messages_proto_msgTypes[12]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -994,7 +1098,7 @@ func (x *ToServerMessage_ConversationRequest) String() string {
 func (*ToServerMessage_ConversationRequest) ProtoMessage() {}
 
 func (x *ToServerMessage_ConversationRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_messages_proto_msgTypes[11]
+	mi := &file_messages_proto_msgTypes[12]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1007,7 +1111,7 @@ func (x *ToServerMessage_ConversationRequest) ProtoReflect() protoreflect.Messag
 
 // Deprecated: Use ToServerMessage_ConversationRequest.ProtoReflect.Descriptor instead.
 func (*ToServerMessage_ConversationRequest) Descriptor() ([]byte, []int) {
-	return file_messages_proto_rawDescGZIP(), []int{1, 0}
+	return file_messages_proto_rawDescGZIP(), []int{2, 0}
 }
 
 func (x *ToServerMessage_ConversationRequest) GetLookupKey() string {
@@ -1049,7 +1153,7 @@ type FromServerMessage_ConversationResponse struct {
 func (x *FromServerMessage_ConversationResponse) Reset() {
 	*x = FromServerMessage_ConversationResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_messages_proto_msgTypes[12]
+		mi := &file_messages_proto_msgTypes[13]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1062,7 +1166,7 @@ func (x *FromServerMessage_ConversationResponse) String() string {
 func (*FromServerMessage_ConversationResponse) ProtoMessage() {}
 
 func (x *FromServerMessage_ConversationResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_messages_proto_msgTypes[12]
+	mi := &file_messages_proto_msgTypes[13]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1075,7 +1179,7 @@ func (x *FromServerMessage_ConversationResponse) ProtoReflect() protoreflect.Mes
 
 // Deprecated: Use FromServerMessage_ConversationResponse.ProtoReflect.Descriptor instead.
 func (*FromServerMessage_ConversationResponse) Descriptor() ([]byte, []int) {
-	return file_messages_proto_rawDescGZIP(), []int{2, 0}
+	return file_messages_proto_rawDescGZIP(), []int{3, 0}
 }
 
 func (x *FromServerMessage_ConversationResponse) GetMessageUuids() []string {
@@ -1102,7 +1206,7 @@ type UserMessage_ConversationStatus struct {
 func (x *UserMessage_ConversationStatus) Reset() {
 	*x = UserMessage_ConversationStatus{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_messages_proto_msgTypes[13]
+		mi := &file_messages_proto_msgTypes[14]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1115,7 +1219,7 @@ func (x *UserMessage_ConversationStatus) String() string {
 func (*UserMessage_ConversationStatus) ProtoMessage() {}
 
 func (x *UserMessage_ConversationStatus) ProtoReflect() protoreflect.Message {
-	mi := &file_messages_proto_msgTypes[13]
+	mi := &file_messages_proto_msgTypes[14]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1128,7 +1232,7 @@ func (x *UserMessage_ConversationStatus) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UserMessage_ConversationStatus.ProtoReflect.Descriptor instead.
 func (*UserMessage_ConversationStatus) Descriptor() ([]byte, []int) {
-	return file_messages_proto_rawDescGZIP(), []int{8, 0}
+	return file_messages_proto_rawDescGZIP(), []int{9, 0}
 }
 
 func (x *UserMessage_ConversationStatus) GetLocalUuid() string {
@@ -1192,7 +1296,7 @@ type UserMessage_Group struct {
 func (x *UserMessage_Group) Reset() {
 	*x = UserMessage_Group{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_messages_proto_msgTypes[14]
+		mi := &file_messages_proto_msgTypes[15]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1205,7 +1309,7 @@ func (x *UserMessage_Group) String() string {
 func (*UserMessage_Group) ProtoMessage() {}
 
 func (x *UserMessage_Group) ProtoReflect() protoreflect.Message {
-	mi := &file_messages_proto_msgTypes[14]
+	mi := &file_messages_proto_msgTypes[15]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1218,7 +1322,7 @@ func (x *UserMessage_Group) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UserMessage_Group.ProtoReflect.Descriptor instead.
 func (*UserMessage_Group) Descriptor() ([]byte, []int) {
-	return file_messages_proto_rawDescGZIP(), []int{8, 1}
+	return file_messages_proto_rawDescGZIP(), []int{9, 1}
 }
 
 func (x *UserMessage_Group) GetName() string {
@@ -1245,186 +1349,202 @@ var file_messages_proto_rawDesc = []byte{
 	0x66, 0x72, 0x6f, 0x6d, 0x12, 0x18, 0x0a, 0x07, 0x70, 0x61, 0x79, 0x6c, 0x6f, 0x61, 0x64, 0x18,
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+	0x65, 0x6f, 0x77, 0x6c, 0x69, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1439,47 +1559,50 @@ func file_messages_proto_rawDescGZIP() []byte {
 	return file_messages_proto_rawDescData
 }
 
-var file_messages_proto_msgTypes = make([]protoimpl.MessageInfo, 15)
+var file_messages_proto_msgTypes = make([]protoimpl.MessageInfo, 16)
 var file_messages_proto_goTypes = []interface{}{
 	(*PackedServerMessage)(nil),                    // 0: meowlib.PackedServerMessage
-	(*ToServerMessage)(nil),                        // 1: meowlib.ToServerMessage
-	(*FromServerMessage)(nil),                      // 2: meowlib.FromServerMessage
-	(*MatriochkaServer)(nil),                       // 3: meowlib.MatriochkaServer
-	(*Matriochka)(nil),                             // 4: meowlib.Matriochka
-	(*Server)(nil),                                 // 5: meowlib.Server
-	(*ContactCard)(nil),                            // 6: meowlib.ContactCard
-	(*PackedUserMessage)(nil),                      // 7: meowlib.PackedUserMessage
-	(*UserMessage)(nil),                            // 8: meowlib.UserMessage
-	(*File)(nil),                                   // 9: meowlib.File
-	(*Location)(nil),                               // 10: meowlib.Location
-	(*ToServerMessage_ConversationRequest)(nil),    // 11: meowlib.ToServerMessage.ConversationRequest
-	(*FromServerMessage_ConversationResponse)(nil), // 12: meowlib.FromServerMessage.ConversationResponse
-	(*UserMessage_ConversationStatus)(nil),         // 13: meowlib.UserMessage.ConversationStatus
-	(*UserMessage_Group)(nil),                      // 14: meowlib.UserMessage.Group
+	(*Invitation)(nil),                             // 1: meowlib.Invitation
+	(*ToServerMessage)(nil),                        // 2: meowlib.ToServerMessage
+	(*FromServerMessage)(nil),                      // 3: meowlib.FromServerMessage
+	(*MatriochkaServer)(nil),                       // 4: meowlib.MatriochkaServer
+	(*Matriochka)(nil),                             // 5: meowlib.Matriochka
+	(*Server)(nil),                                 // 6: meowlib.Server
+	(*ContactCard)(nil),                            // 7: meowlib.ContactCard
+	(*PackedUserMessage)(nil),                      // 8: meowlib.PackedUserMessage
+	(*UserMessage)(nil),                            // 9: meowlib.UserMessage
+	(*File)(nil),                                   // 10: meowlib.File
+	(*Location)(nil),                               // 11: meowlib.Location
+	(*ToServerMessage_ConversationRequest)(nil),    // 12: meowlib.ToServerMessage.ConversationRequest
+	(*FromServerMessage_ConversationResponse)(nil), // 13: meowlib.FromServerMessage.ConversationResponse
+	(*UserMessage_ConversationStatus)(nil),         // 14: meowlib.UserMessage.ConversationStatus
+	(*UserMessage_Group)(nil),                      // 15: meowlib.UserMessage.Group
 }
 var file_messages_proto_depIdxs = []int32{
-	11, // 0: meowlib.ToServerMessage.pullRequest:type_name -> meowlib.ToServerMessage.ConversationRequest
-	7,  // 1: meowlib.ToServerMessage.messages:type_name -> meowlib.PackedUserMessage
-	5,  // 2: meowlib.ToServerMessage.knownServers:type_name -> meowlib.Server
-	4,  // 3: meowlib.ToServerMessage.matriochkaMessage:type_name -> meowlib.Matriochka
-	7,  // 4: meowlib.FromServerMessage.chat:type_name -> meowlib.PackedUserMessage
-	5,  // 5: meowlib.FromServerMessage.knownServers:type_name -> meowlib.Server
-	3,  // 6: meowlib.Matriochka.prev:type_name -> meowlib.MatriochkaServer
-	3,  // 7: meowlib.Matriochka.next:type_name -> meowlib.MatriochkaServer
-	5,  // 8: meowlib.ContactCard.pullServers:type_name -> meowlib.Server
-	13, // 9: meowlib.UserMessage.Status:type_name -> meowlib.UserMessage.ConversationStatus
-	6,  // 10: meowlib.UserMessage.contact:type_name -> meowlib.ContactCard
-	5,  // 11: meowlib.UserMessage.knownServers:type_name -> meowlib.Server
-	14, // 12: meowlib.UserMessage.group:type_name -> meowlib.UserMessage.Group
-	9,  // 13: meowlib.UserMessage.files:type_name -> meowlib.File
-	10, // 14: meowlib.UserMessage.currentLocation:type_name -> meowlib.Location
-	6,  // 15: meowlib.UserMessage.ConversationStatus.myNextIdentity:type_name -> meowlib.ContactCard
-	6,  // 16: meowlib.UserMessage.Group.members:type_name -> meowlib.ContactCard
-	17, // [17:17] is the sub-list for method output_type
-	17, // [17:17] is the sub-list for method input_type
-	17, // [17:17] is the sub-list for extension type_name
-	17, // [17:17] is the sub-list for extension extendee
-	0,  // [0:17] is the sub-list for field type_name
+	12, // 0: meowlib.ToServerMessage.pullRequest:type_name -> meowlib.ToServerMessage.ConversationRequest
+	8,  // 1: meowlib.ToServerMessage.messages:type_name -> meowlib.PackedUserMessage
+	6,  // 2: meowlib.ToServerMessage.knownServers:type_name -> meowlib.Server
+	5,  // 3: meowlib.ToServerMessage.matriochkaMessage:type_name -> meowlib.Matriochka
+	1,  // 4: meowlib.ToServerMessage.invitation:type_name -> meowlib.Invitation
+	8,  // 5: meowlib.FromServerMessage.chat:type_name -> meowlib.PackedUserMessage
+	6,  // 6: meowlib.FromServerMessage.knownServers:type_name -> meowlib.Server
+	1,  // 7: meowlib.FromServerMessage.invitation:type_name -> meowlib.Invitation
+	4,  // 8: meowlib.Matriochka.prev:type_name -> meowlib.MatriochkaServer
+	4,  // 9: meowlib.Matriochka.next:type_name -> meowlib.MatriochkaServer
+	6,  // 10: meowlib.ContactCard.pullServers:type_name -> meowlib.Server
+	14, // 11: meowlib.UserMessage.Status:type_name -> meowlib.UserMessage.ConversationStatus
+	7,  // 12: meowlib.UserMessage.contact:type_name -> meowlib.ContactCard
+	6,  // 13: meowlib.UserMessage.knownServers:type_name -> meowlib.Server
+	15, // 14: meowlib.UserMessage.group:type_name -> meowlib.UserMessage.Group
+	10, // 15: meowlib.UserMessage.files:type_name -> meowlib.File
+	11, // 16: meowlib.UserMessage.currentLocation:type_name -> meowlib.Location
+	7,  // 17: meowlib.UserMessage.ConversationStatus.myNextIdentity:type_name -> meowlib.ContactCard
+	7,  // 18: meowlib.UserMessage.Group.members:type_name -> meowlib.ContactCard
+	19, // [19:19] is the sub-list for method output_type
+	19, // [19:19] is the sub-list for method input_type
+	19, // [19:19] is the sub-list for extension type_name
+	19, // [19:19] is the sub-list for extension extendee
+	0,  // [0:19] is the sub-list for field type_name
 }
 
 func init() { file_messages_proto_init() }
@@ -1501,7 +1624,7 @@ func file_messages_proto_init() {
 			}
 		}
 		file_messages_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ToServerMessage); i {
+			switch v := v.(*Invitation); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1513,7 +1636,7 @@ func file_messages_proto_init() {
 			}
 		}
 		file_messages_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*FromServerMessage); i {
+			switch v := v.(*ToServerMessage); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1525,7 +1648,7 @@ func file_messages_proto_init() {
 			}
 		}
 		file_messages_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*MatriochkaServer); i {
+			switch v := v.(*FromServerMessage); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1537,7 +1660,7 @@ func file_messages_proto_init() {
 			}
 		}
 		file_messages_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Matriochka); i {
+			switch v := v.(*MatriochkaServer); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1549,7 +1672,7 @@ func file_messages_proto_init() {
 			}
 		}
 		file_messages_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Server); i {
+			switch v := v.(*Matriochka); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1561,7 +1684,7 @@ func file_messages_proto_init() {
 			}
 		}
 		file_messages_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ContactCard); i {
+			switch v := v.(*Server); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1573,7 +1696,7 @@ func file_messages_proto_init() {
 			}
 		}
 		file_messages_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*PackedUserMessage); i {
+			switch v := v.(*ContactCard); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1585,7 +1708,7 @@ func file_messages_proto_init() {
 			}
 		}
 		file_messages_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*UserMessage); i {
+			switch v := v.(*PackedUserMessage); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1597,7 +1720,7 @@ func file_messages_proto_init() {
 			}
 		}
 		file_messages_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*File); i {
+			switch v := v.(*UserMessage); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1609,7 +1732,7 @@ func file_messages_proto_init() {
 			}
 		}
 		file_messages_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Location); i {
+			switch v := v.(*File); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1621,7 +1744,7 @@ func file_messages_proto_init() {
 			}
 		}
 		file_messages_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ToServerMessage_ConversationRequest); i {
+			switch v := v.(*Location); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1633,7 +1756,7 @@ func file_messages_proto_init() {
 			}
 		}
 		file_messages_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*FromServerMessage_ConversationResponse); i {
+			switch v := v.(*ToServerMessage_ConversationRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1645,7 +1768,7 @@ func file_messages_proto_init() {
 			}
 		}
 		file_messages_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*UserMessage_ConversationStatus); i {
+			switch v := v.(*FromServerMessage_ConversationResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1657,6 +1780,18 @@ func file_messages_proto_init() {
 			}
 		}
 		file_messages_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*UserMessage_ConversationStatus); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messages_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*UserMessage_Group); i {
 			case 0:
 				return &v.state
@@ -1675,7 +1810,7 @@ func file_messages_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_messages_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   15,
+			NumMessages:   16,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/pb/messages.proto b/pb/messages.proto
index 4714bd0..0290dc4 100644
--- a/pb/messages.proto
+++ b/pb/messages.proto
@@ -15,6 +15,16 @@ message PackedServerMessage {
 	bytes signature = 3; // The message signature with the client public key |eo| the reference to teh symetrical key used
 }
 
+// structure to hold an invitation through a server
+message Invitation {
+    bytes payload = 1;
+    int32 timeout = 2;
+    int32 urllen = 3;
+    string password = 4;
+    string url = 5;
+    int64 expiry = 6;
+}
+
 // structure defining a message for a server, that will be encrypted, then sent in a "packedmessage" payload
 message ToServerMessage {
 	string type = 1; // Type 1 : final destination / 2 : forward 
@@ -39,6 +49,8 @@ message ToServerMessage {
     
     string uuid = 8;
 
+    Invitation invitation = 9;
+
 }
 
 // structure defining a from server receiver message decrypted from a "packedmessage" payload
@@ -57,6 +69,8 @@ message FromServerMessage {
 
     repeated Server knownServers = 7; 
 
+    Invitation invitation = 8;
+
 }
 
 message MatriochkaServer {