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I was wondering if there exists a thunderbird addon that gives similar functionality as Google's "undo send" feature? This basically just delays the sent message for a few seconds allowing the user to cancel the send if desired. I find this very useful in Gmail and would love the option now that I started using thunderbird.

I've seen the send later addon, but this isn't really what I want. I want something very similar to Google's feature where it automatically delays each message before sending with an easy to access option to cancel the send. Thanks!

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This is easily done in Outlook and shields from sending an unfinished email by pressing ctrl-enter. In Thunderbird, I really miss the feature. It should be possible to indicate how much time the mail should remain in the out box before actually being sent. The procedure for Outlook: – Eric Darchis Aug 10 '10 at 17:37
Question was also posted to the Mozilla support:… – Eric Darchis Aug 10 '10 at 17:47
@EricDarchis: Note that Thunderbird has a setting so that it asks for confirmation whenever the key combination for sending a mail is used. – unor Nov 2 '13 at 14:06

That add-on probably is what you want actually, as that is all Gmail's "undo send" option really does behind the scenes. It doesn't actually send your email's instantly, but rather delays them so you have the option to opt out before it's actually sent. The option doesn't actually dig into people's mailboxes and take the email out. Once it's sent, it's pushed to a different mail server. If everyone in the world used Gmail, maybe they could take it out of someone else's mailbox for you, but since everyone doesn't, this is how their "undo" feature actually works.

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Yes I understand that. Maybe its my fault for not trying out the addon first. But is there a way to configure it so that for EVERY message I send it delays it by, say, 5 seconds? Thanks – josh Feb 7 '10 at 22:32
Basically I'm saying that I completely understand that Gmail's feature does not pull the message out of peoples' inboxes but rather "queues" it locally before sending. I'd just like to have the exact same functionality where the delay is automatically activated for every sent mail. – josh Feb 7 '10 at 22:36
I don't know about presets as low as 5 seconds, but there are other presets for 15 and 30 minutes that this extension allows you to configure. – John T Feb 7 '10 at 22:37
5 would be cool if someone made an extension that does what I'm looking for. I've been saved many times by Gmail's undo feature where I quickly realize right after I hit send that I messed something up... – josh Feb 7 '10 at 22:44
@josh - why don't you post a comment on the developer's page and ask for this feature? :) – Molly7244 Feb 7 '10 at 22:51

Try the "MagicSLR" extension. You can add a "Send Later button" or use it to replace the Send button.

MagicSLR extends functions and buttons to get and send messages. Many users missed a combined "Get/Send" button in Thunderbird. MagicSLR provides this button and more.

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I am not sure if this is relevant but I stumbled upon the ability to cancel a message after I have hit the "Send" button. Usually there is a small window of opportunity after hitting "Send" in Thunderbird when Thunderbird is busy processing your request. During this brief few seconds, pressing Ctrl + Alt + Enter will actually cancel the sending of the message. Of course, larger e-mails ie. with attachments, afford you a bit more time to cancel your e-mail. I find this helpful if I have realized a typo or forgot to add content, I can stop the send process and go back and edit it.

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There was exactly an add-on like that in thunderbird: You could choose 5-10-20 second delays to send emails and it saved me a thousand times. at some upgrade of thunderbird, it became useless and then developer did not bring up with a new one. i changed computers, now i cannot even see what that add on was. There was an annoying little glitch, but not worth to mention. I agree with the poster. This is a crucial add on.

Another useful add-on which is no longer available was "send without save"

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This is really a comment and not an answer to the original question. To critique or request clarification from an author, leave a comment below their post - you can always comment on your own posts, and once you have sufficient reputation you will be able to comment on any post. Please read Why do I need 50 reputation to comment? What can I do instead? – DavidPostill May 1 at 22:55

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