How to delay Gmail send of messages to allow 'undo send' feature?

Question

I hear that Gmail has ability to delay sending emails for up to 30 seconds so that you can undo the send, but I am unable to locate the setting.

Where does this setting exist in Gmail?

Answer 1

If you make a typo or regret sending a message, you can undo the action by enabling "Undo send." This setting gives you the option to take back a message you just sent.

To enable Undo Send:

• Click the gear in the top right
• Select Settings.
• Scroll down to "Undo Send" and click Enable.
• Set the cancellation period (the amount of time you have to decide if you want to unsend an email).
• Click Save Changes at the bottom of the page. If you had Undo Send turned on in Gmail Labs, your Undo Send setting will be on by default.

Note: To give you time to undo, Gmail delays sending the message for a few seconds. So if you don't select "Undo" within the time limit, your message will be sent. "Undo send" may not work if you experience connection issues.

Taken from this Google Support article.

Answer 2

Turn this on in the Settings (gear icon), in the General tab, see Undo Send: field which can be set at Send Cancellation Period to 5, 10, 20, or 30 Seconds:

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Old solution that no longer is visible, replaced by above solution:

It is in the 'Labs' section of settings, you have to enable this experimental feature. Search for 'undo send' to find it. You can then configure the delay of send from 5 up to 30 seconds in the General tab of your settings. It defaults to 10 seconds.