Cancel Mailing
Can I Stop or Cancel an Ongoing Mailing?
If the mailing is still in progress, you can stop it by selecting the desired mailing task from the status panel (located at the bottom left of the window) and halting it. The email sending process will be interrupted.
However, emails that have already been sent cannot be stopped or recalled. This limitation is inherent to email functionality. Once an email has been delivered, it cannot be retrieved or prevented from being read.