/unibox/emails/reply Authentication
Send your organization API key as a Bearer credential.
Authorization: Bearer YOUR_API_KEY Body
application/json Reply email data
body string required Email body content (HTML or text)
<p>Hello, this is reply</p> subject string required Email subject
Re: Proposal use_prev_subject boolean required Use previous email subject if true
true from_email string required Sender email address
sales@company.com to_email string required Recipient email address
client@example.com email_id number required Email ID being replied to
12345 cc string CC email addresses
manager@example.com Response
application/json Reply email sent successfully
id number required Unique ID of the created email
123 thread_id number required Thread ID this email belongs to
999 date_sent string required Date when the email was sent
2025-12-08T12:00:00.000Z cc_email string required CC email addresses
manager@company.com from_name string required Sender name
John Doe from_email string required Sender email address
sales@company.com to_email string required Recipient email address
anabaeva93@yandex.ru body string required Email body content
<p>Hello, this is a reply</p> subject string required Email subject
Re: Partnership proposal is_our_email boolean required Whether this email was sent by our system
true is_new boolean required Whether this email is marked as new
false message_id string required Message-ID returned by SMTP server
<message-id@mail.com> Invalid request body (e.g. missing required fields, or invalid field values)
message string[] required List of detailed validation or business error messages
["Name cannot be empty", "Field must be greater than 0"] error string required Short error description
Bad Request statusCode number required HTTP status code of the error
400 This request is unauthorized (either the Authorization header is missing or invalid, or the API key has been revoked)
message string[] required List of messages explaining why the request was unauthorized
["User is not authorized", "Invalid API key"] error string required Short error description
Unauthorized statusCode number required HTTP status code of the error
401 You have exceeded the rate limit. Please check the rate limit docs for more information.
message string[] required List of messages explaining the rate limiting issue
["Too many requests, please try again later"] error string required Short error description
Too Many Requests statusCode number required HTTP status code of the error
429