diff --git a/src/api/api.go b/src/api/api.go
index df9c7cf..2d8194f 100644
--- a/src/api/api.go
+++ b/src/api/api.go
@@ -109,7 +109,7 @@ type SendMessageV2 struct {
 	QuoteAuthor       *string                 `json:"quote_author"`
 	QuoteMessage      *string                 `json:"quote_message"`
 	QuoteMentions     []client.MessageMention `json:"quote_mentions"`
-	TextMode          *string                 `json:"text_mode"`
+	TextMode          *string                 `json:"text_mode" enums:"normal,styled"`
 }
 
 type TypingIndicatorRequest struct {
@@ -341,7 +341,7 @@ func (a *Api) Send(c *gin.Context) {
 
 // @Summary Send a signal message.
 // @Tags Messages
-// @Description Send a signal message
+// @Description Send a signal message. Set the text_mode to 'styled' in case you want to add formatting to your text message. Styling Options: *italic text*, **bold text**, ~strikethrough text~.
 // @Accept  json
 // @Produce  json
 // @Success 201 {object} SendMessageResponse
@@ -1623,3 +1623,27 @@ func (a *Api) GetTrustMode(c *gin.Context) {
 
 	c.JSON(200, trustMode)
 }
+
+// @Summary Send a synchronization message with the local contacts list to all linked devices.
+// @Tags Contacts
+// @Description Send a synchronization message with the local contacts list to all linked devices. This command should only be used if this is the primary device.
+// @Accept  json
+// @Produce  json
+// @Param number path string true "Registered Phone Number"
+// @Success 204
+// @Failure 400 {object} Error
+// @Router /v1/contacts{number}/sync [post]
+func (a *Api) SendContacts(c *gin.Context) {
+	number := c.Param("number")
+	if number == "" {
+		c.JSON(400, Error{Msg: "Couldn't process request - number missing"})
+		return
+	}
+
+	err := a.signalClient.SendContacts(number)
+	if err != nil {
+		c.JSON(400, Error{Msg: err.Error()})
+		return
+	}
+	c.Status(http.StatusNoContent)
+}
diff --git a/src/client/client.go b/src/client/client.go
index 6ecb7dc..72e629a 100644
--- a/src/client/client.go
+++ b/src/client/client.go
@@ -1582,6 +1582,21 @@ func (s *SignalClient) SearchForNumbers(number string, numbers []string) ([]Sear
 	return searchResultEntries, err
 }
 
+func (s* SignalClient) SendContacts(number string) error {
+	var err error
+	if s.signalCliMode == JsonRpc {
+		jsonRpc2Client, err := s.getJsonRpc2Client(number)
+		if err != nil {
+			return err
+		}
+		_, err = jsonRpc2Client.getRaw("sendContacts", nil)
+	} else {
+		cmd := []string{"--config", s.signalCliConfig, "-a", number, "sendContacts"}
+		_, err = s.cliClient.Execute(true, cmd, "")
+	}
+	return err
+}
+
 func (s *SignalClient) UpdateContact(number string, recipient string, name *string, expirationInSeconds *int) error {
 	var err error
 	if s.signalCliMode == JsonRpc {
diff --git a/src/docs/docs.go b/src/docs/docs.go
index 890e42c..0bc3b04 100644
--- a/src/docs/docs.go
+++ b/src/docs/docs.go
@@ -333,6 +333,39 @@ var doc = `{
                 }
             }
         },
+        "/v1/contacts{number}/sync": {
+            "post": {
+                "description": "Send a synchronization message with the local contacts list to all linked devices. This command should only be used if this is the primary device.",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Contacts"
+                ],
+                "summary": "Send a synchronization message with the local contacts list to all linked devices.",
+                "parameters": [
+                    {
+                        "type": "string",
+                        "description": "Registered Phone Number",
+                        "name": "number",
+                        "in": "path",
+                        "required": true
+                    }
+                ],
+                "responses": {
+                    "204": {},
+                    "400": {
+                        "description": "Bad Request",
+                        "schema": {
+                            "$ref": "#/definitions/api.Error"
+                        }
+                    }
+                }
+            }
+        },
         "/v1/devices/{number}": {
             "post": {
                 "description": "Links another device to this device. Only works, if this is the master device.",
@@ -1566,7 +1599,7 @@ var doc = `{
         },
         "/v2/send": {
             "post": {
-                "description": "Send a signal message",
+                "description": "Send a signal message. Set the text_mode to 'styled' in case you want to add formatting to your text message. Styling Options: *italic text*, **bold text**, ~strikethrough text~.",
                 "consumes": [
                     "application/json"
                 ],
@@ -1839,7 +1872,11 @@ var doc = `{
                     "type": "string"
                 },
                 "text_mode": {
-                    "type": "string"
+                    "type": "string",
+                    "enum": [
+                        "normal",
+                        "styled"
+                    ]
                 }
             }
         },
diff --git a/src/docs/swagger.json b/src/docs/swagger.json
index c6d3e34..ef70d4c 100644
--- a/src/docs/swagger.json
+++ b/src/docs/swagger.json
@@ -317,6 +317,39 @@
                 }
             }
         },
+        "/v1/contacts{number}/sync": {
+            "post": {
+                "description": "Send a synchronization message with the local contacts list to all linked devices. This command should only be used if this is the primary device.",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Contacts"
+                ],
+                "summary": "Send a synchronization message with the local contacts list to all linked devices.",
+                "parameters": [
+                    {
+                        "type": "string",
+                        "description": "Registered Phone Number",
+                        "name": "number",
+                        "in": "path",
+                        "required": true
+                    }
+                ],
+                "responses": {
+                    "204": {},
+                    "400": {
+                        "description": "Bad Request",
+                        "schema": {
+                            "$ref": "#/definitions/api.Error"
+                        }
+                    }
+                }
+            }
+        },
         "/v1/devices/{number}": {
             "post": {
                 "description": "Links another device to this device. Only works, if this is the master device.",
@@ -1550,7 +1583,7 @@
         },
         "/v2/send": {
             "post": {
-                "description": "Send a signal message",
+                "description": "Send a signal message. Set the text_mode to 'styled' in case you want to add formatting to your text message. Styling Options: *italic text*, **bold text**, ~strikethrough text~.",
                 "consumes": [
                     "application/json"
                 ],
@@ -1823,7 +1856,11 @@
                     "type": "string"
                 },
                 "text_mode": {
-                    "type": "string"
+                    "type": "string",
+                    "enum": [
+                        "normal",
+                        "styled"
+                    ]
                 }
             }
         },
diff --git a/src/docs/swagger.yaml b/src/docs/swagger.yaml
index a17bb8f..d91dd86 100644
--- a/src/docs/swagger.yaml
+++ b/src/docs/swagger.yaml
@@ -154,6 +154,9 @@ definitions:
       sticker:
         type: string
       text_mode:
+        enum:
+        - normal
+        - styled
         type: string
     type: object
   api.TrustIdentityRequest:
@@ -497,6 +500,28 @@ paths:
       summary: Updates the info associated to a number on the contact list. If the contact doesn’t exist yet, it will be added.
       tags:
       - Contacts
+  /v1/contacts{number}/sync:
+    post:
+      consumes:
+      - application/json
+      description: Send a synchronization message with the local contacts list to all linked devices. This command should only be used if this is the primary device.
+      parameters:
+      - description: Registered Phone Number
+        in: path
+        name: number
+        required: true
+        type: string
+      produces:
+      - application/json
+      responses:
+        "204": {}
+        "400":
+          description: Bad Request
+          schema:
+            $ref: '#/definitions/api.Error'
+      summary: Send a synchronization message with the local contacts list to all linked devices.
+      tags:
+      - Contacts
   /v1/devices/{number}:
     post:
       consumes:
@@ -1317,7 +1342,7 @@ paths:
     post:
       consumes:
       - application/json
-      description: Send a signal message
+      description: 'Send a signal message. Set the text_mode to ''styled'' in case you want to add formatting to your text message. Styling Options: *italic text*, **bold text**, ~strikethrough text~.'
       parameters:
       - description: Input Data
         in: body
diff --git a/src/main.go b/src/main.go
index 7cd512b..0d1e6a0 100644
--- a/src/main.go
+++ b/src/main.go
@@ -242,6 +242,7 @@ func main() {
 		contacts := v1.Group("/contacts")
 		{
 			contacts.PUT(":number", api.UpdateContact)
+			contacts.POST(":number/sync", api.SendContacts)
 		}
 	}