But the users have to be quick in deciding whether they want to send the e-mail or not because Gmail only offers a few seconds delay with this feature after which the mail is sent automatically to the recipient. To enable this feature the users have to follow some simple steps:

First of all the users of Gmail have to click on the gear icon on the right side of the mail which will provide them access to the settings panel of Gmail.     In setting panel, go to Undo send option and click on enable button After this you can set the amount of time that you need to decide whether to send the e-mail or not Finally, click on save changes option and this feature will be enabled on you Gmail account. 

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