We had the capacity to “un-send” messages in Gmail for around six years now, however, the element was to some degree covered up in the dark Labs segment of Gmail’s settings. Google has formally declared that “fix send” is a choice in its Gmail administration, and it’s much less demanding to discover in Gmail’s settings. Before digging around the settings to enable undo send, you need to reload Gmail, otherwise, you won’t find the feature.
Then click the gear icon on the top left of your inbox.
You’ll be taken to the general settings in the “General” tab. Look/scroll down to find the undo send feature, and click the box to enable it.
It’s set to let you un-send an email for 10 seconds by default, but you can lengthen and shorten the send cancellation period from 5, 10, 20, or 30 seconds.