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POST
Reply to Conversation
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

string
required
Conversation ID.
string
Message type: outbound sends an email reply (default), note adds an internal note.
string
Message subject. Defaults to the conversation subject.
string
Plain text body. Outbound messages require bodyText or bodyHtml.
string
HTML body. Outbound messages require bodyText or bodyHtml.
string
Sender profile to send an outbound reply from, for example the address the subscriber originally wrote to. 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. List profiles with List Sender Profiles.
object[]
Files to attach, up to 10 and 15 MB total after decoding. Each item has a filename, base64 content, and an optional contentType (inferred from the file name when omitted). Attachments need attachment storage on the server: check attachmentsAvailable from Get Inbox Address. Attachments on notes are stored but never emailed.
Reply with an attachment:
If a stored attachment cannot be read when the reply is sent, the reply is retried and then marked failed rather than sent without the file. Reply from a specific sender profile:

Responses