Messages
Send SMS and MMS messages
Send individual SMS or MMS, broadcast to a contact list, or post a private internal comment.
POST
/
v1
/
message
/
send
curl --request POST \
--url https://api.heymarket.com/v1/message/send \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"creator_id": 1,
"inbox_id": 1,
"phone_number": "16505551003",
"text": "My first api message",
"local_id": "6d8d0429-3f15-4293-8d0b-38bf1dd5ca06"
}
'{
"date": "<string>",
"gallery_url": "<string>",
"id": 123
}"<string>"Unauthorized"<string>"too many requestserrorUse this endpoint to send messages from a Heymarket inbox. It supports individual messages, list broadcasts, MMS media, templates, surveys, and private internal comments.
creator_id is the member ID returned by GET /v1/inboxes or GET /v1/team, not necessarily your general user ID.local_id is required when sending a broadcast with list_id. Use a unique value per broadcast send.Authorizations
ApiSecretJwtAuthLegacyApiKeyAuth
Recommended authentication for new integrations. Generate a short-lived JWT from your API Secret ID and API Secret Key, then pass the signed JWT as a bearer token in the Authorization header.
API Secret credentials are available in the Heymarket app under Settings > Integrations > API. The Secret Key is shown only when it is generated, so copy and store it securely before closing the dialog.
Use the following JWT values:
{
"alg": "HS256",
"typ": "JWT"
}
{
"iss": "YOUR_API_SECRET_ID",
"iat": CURRENT_UNIX_TIMESTAMP
}
Replace CURRENT_UNIX_TIMESTAMP with the current Unix timestamp in seconds when generating the token.
Sign the JWT with HMAC-SHA256 using this signing secret:
YOUR_API_SECRET_ID||YOUR_API_SECRET_KEY
Send the signed JWT as a bearer token:
Authorization: Bearer YOUR_SIGNED_JWT
Tokens expire 5 minutes after the iat timestamp. Generate a new JWT per request, or cache it briefly for less than 5 minutes. Generate JWTs only from trusted server-side code; do not expose the API Secret Key in browser, mobile, or other client-side code.
Body
application/json
Message send json
Show child attributes
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Available options:
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curl --request POST \
--url https://api.heymarket.com/v1/message/send \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"creator_id": 1,
"inbox_id": 1,
"phone_number": "16505551003",
"text": "My first api message",
"local_id": "6d8d0429-3f15-4293-8d0b-38bf1dd5ca06"
}
'{
"date": "<string>",
"gallery_url": "<string>",
"id": 123
}"<string>"Unauthorized"<string>"too many requestserror