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POST
/
api
/
v1
/
conversations
/
{conversationId}
/
messages
Reply to Conversation
curl --request POST \
  --url https://api.sequenzy.com/api/v1/conversations/{conversationId}/messages \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "type": "<string>",
  "subject": "<string>",
  "bodyText": "<string>",
  "bodyHtml": "<string>"
}
'
{
  "success": true,
  "message": {
    "id": "msg_new123",
    "conversationId": "conv_abc123",
    "type": "outbound",
    "subject": "Re: A quick update",
    "bodyText": "Happy to help! Let me know if you have other questions.",
    "bodyHtml": null,
    "fromEmail": "support@example.com",
    "fromName": null,
    "fromUserId": "user_abc123",
    "attachments": [],
    "isRead": true,
    "createdAt": "2026-06-11T10:00:00.000Z",
    "deliveryStatus": "pending"
  }
}
Send an email reply to the subscriber or add an internal team note. Replies are queued for delivery and reopen closed conversations. Notes are only visible to your team and do not reopen conversations.

​
Request

​
conversationId
string
required
Conversation ID.
​
type
string
Message type: outbound sends an email reply (default), note adds an internal note.
​
subject
string
Message subject. Defaults to the conversation subject.
​
bodyText
string
Plain text body. Outbound messages require bodyText or bodyHtml.
​
bodyHtml
string
HTML body. Outbound messages require bodyText or bodyHtml.
curl -X POST "https://api.sequenzy.com/api/v1/conversations/conv_abc123/messages" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"bodyText": "Happy to help! Let me know if you have other questions."}'

​
Responses

{
  "success": true,
  "message": {
    "id": "msg_new123",
    "conversationId": "conv_abc123",
    "type": "outbound",
    "subject": "Re: A quick update",
    "bodyText": "Happy to help! Let me know if you have other questions.",
    "bodyHtml": null,
    "fromEmail": "support@example.com",
    "fromName": null,
    "fromUserId": "user_abc123",
    "attachments": [],
    "isRead": true,
    "createdAt": "2026-06-11T10:00:00.000Z",
    "deliveryStatus": "pending"
  }
}