"Attempt to send more than 5 emails" 403 Forbidden

[abdessalaam]

Describe the bug
I have an opt-in in my flow, and after the visitor signs up and email with confirmation should be sent. I have a working connection with postmark and it was working recently. However, I now get this error.
In the web browser console:

https://<my.domain.com>/api/v1/sessions/cm3ecl19l003vchubgxzajm3l/continueChat 403 (Forbidden)

in the logs:

Fail
Failed to send the reply

{
  "status": 403,
  "body": {
    "message": "Attempt to send more than 5 emails",
    "code": "FORBIDDEN",
    "data": {
      "code": "FORBIDDEN",
      "httpStatus": 403,
      "path": "continueChat"
    }
  }
}

To Reproduce
Steps to reproduce the behavior:

• Create send email block.
• Write custom text
• Try the bot in live environment (as emails don't send when testing)

Expected behavior
I am not trying to send 5 emails, only 1, so I would expect my emails to be sent.