Webmail

How to undo sending an email

Everyone has sent an email without the attachment, with the wrong customer name, or to the wrong person. Once the message goes out, there's no taking it back: the recipient already has it. That's why webmail holds the message for a few seconds before sending, and you can change your mind in that window.

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Signing up is online and activation is automatic: pay by PIX and the account is ready in minutes for you to activate your domain. For questions, we answer on WhatsApp.

Message list with the notice Sending in 5 s and the Undo button at the bottom of the screen
The notice with the Undo button, right after clicking Send (real screen, fictional data).
  • On all lua.email plans
  • In the browser, nothing to install
  • Support based in Brazil, in Portuguese

How it works at lua.email

  1. Write and click Send

    The message closes and the notice Sending in 5 s… Undo appears in the corner of the screen. While the countdown runs, nothing has gone out.

  2. Click Undo (or Ctrl+Z)

    The message reopens as it was, so you can fix it. It's kept in Drafts.

  3. Keep working

    During the countdown you can open another message, go to the calendar, or reload the page. If you close the tab, the message goes out normally when the time is up.

  4. Adjust the time, if you want

    The default is 5 seconds. Under Settings → Preferences → Compose messages → Undo send you can change it to 10, 20, or 30 seconds, or turn it off.

Undo send option with 5 seconds, under Compose messages
The undo time, under Settings → Preferences → Compose messages.

Good to know

  • It also works on quick reply, opened below the message: the reply box closes right away and the notice stays in the corner.
  • If sending fails after the countdown (a nonexistent address, for example), the message goes to Drafts and the notice shows Open, so you can fix it and send it again.
  • A scheduled message doesn't go through Undo: to change anything, edit or cancel the schedule before the set time.
Step by step in the webmail manual

Questions about undo send

How long do I have to undo sending?

5 seconds by default. Each person can change it to 10, 20, or 30 seconds, or turn it off, under Settings → Preferences → Compose messages.

Can I undo an email that was already delivered?

No. Undo works because the message waits a few seconds before going out. After that time, it has already been sent.

What if I close the tab during the countdown?

The message goes out normally when the time is up. To cancel, click Undo before the countdown ends.

Does it work on quick reply?

Yes. The reply box closes right away and the Undo notice stays in the corner of the screen, as with a new message.

See also

Schedule send

Write now and choose the date and time. The message goes out on its own at the set time, even with your computer off.

See how it works

Recover deleted email

Emptied the Trash or deleted from your phone? With the recovery add-on, the message is kept for 7 days and the user restores it themselves.

See how it works

Bounced email explained

Instead of a code like 550 5.1.1, the notice tells you in Portuguese why the message bounced and what to do.

See how it works

Snooze an email

Can't deal with it now? Snooze it until later, tomorrow, or any date you like. At the right time, the message comes back as unread.

See how it works
See all features

Want this working at your company today?

lua.email costs from R$ 8.90 per mailbox, with webmail and lua Colabora on all plans. Signup is online and activation is automatic: pay by PIX and the account is ready in minutes for you to activate your domain. For questions, we answer on WhatsApp.

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