A/B Tests12

Account7

Account Health6

Accounts16

Analytics17

Audience Syncs6

Campaigns34

Companies4

Conversations12

Data Exports8

design.md2

Email AI Style3

Email Blocks3

Email Components9

Email Design System2

Email Sends2

Emails3

Events2

Feedback1

Frequency Cap3

Generation3

In-app6

Integrations13

Landing Pages18

Lists6

Media3

Migrations7

Notification Preferences2

Orders2

Products9

Push24

Receiving Domains5

References8

Segments5

Sender Profiles4

Sending Status2

Sequences48

Shopify2

SMS5

Subscribers32

Suppressions3

Sync Rules2

Tags4

Team3

Templates13

Tracking Domain4

Tracking Settings2

Transactional6

Warehouse Sync14

Web Tracking Keys6

Webhooks10

Websites6

Widgets21

Conversations

Send conversation message

Changed on Oct 16, 2026

Sends an email reply to the subscriber or adds an internal note. Replies reopen closed conversations.

post/conversations/{conversationId}/messages

Request

Base URL
https://api.sequenzy.com/api/v1
URL
https://api.sequenzy.com/api/v1/conversations/{conversationId}/messages
Auth
HTTP bearer

Path parameters

conversationIdstring required

Conversation ID.

Request body

type'outbound' | 'note'

outbound sends an email reply, note adds an internal team note.

subjectstring

Message subject. Defaults to the conversation subject.

bodyTextstring

Plain text body. Outbound messages require bodyText or bodyHtml.

bodyHtmlstring

HTML body. Outbound messages require bodyText or bodyHtml.

senderProfileIdstring

Sender profile to send an outbound reply from. Its sending domain must be verified. Ignored for notes. When omitted, the reply is sent from the API key owner's email address, which must be on one of your verified sending domains.

Response

Message created

successboolean

Example response

{
  "success": true,
  "message": {
    "id": "msg_abc123"
  }
}

Changes

Oct 16, 2026db3873ca3d4d Revision changes
- warning
  added the new system enum value to the / response property for the response status
- info
  added the new optional request property
- info
  added the new optional request property
- info
  added the non-success response with the status
- info
  added the optional property to the response with the status
- info
  added the optional property to the response with the status
- info
  added the optional property to the response with the status
- info
  added the optional property to the response with the status
- info
  added the optional property /// to the response with the status
- info
  added the optional property /// to the response with the status
- info
  added the required property /// to the response with the status
- info
  added the required property /// to the response with the status
- info
  added the required property /// to the response with the status
Aug 19, 2026ba3a29c6eb33 Revision changes
- info
  added the optional property to the response with the status
- info
  added the optional property to the response with the status
- info
  added the optional property to the response with the status
- info
  added the optional property to the response with the status

Operation history (5 revisions)