how do i stop sending a mail message in mac mail? as i accidentally hit reply all instead of reply to a message that has a lot of email addresses on it. I have my mac mail hooked up to my gmail account. when i sent the email it just shows being sent in the left column of the mail client, and no where can i cancel it or remove it from being sent. When it tries to send it it gets an error that pops up and cant send through server (i understand that as it is over the limits of gmail for sending) all i want to do is cancel it and remove it from the list. i have tried the force quit and even a restart but then when i open the mail client up it tries to send it again... also to let you know i was not trying to spam or any of that bs.... as it was a joke that had a long recipient list.