With Gmail, you always have the possibility of recalling emails. It makes no difference whether the recipient of the message also uses Gmail or another email program. The only decisive factor for recalling Gmail messages that have been sent is time. Google allows a certain time window following the sending of an email during which the message can still be recalled. This is like a grace period: even though you’ve clicked on “Send,” Gmail still holds on to the message for a short while, during which you have the option of recalling a Gmail email or even stopping its pending delivery.
The default time window for Gmail email recalling is five seconds. Admittedly, that’s a very short window for recalling emails. Sometimes, it might take a little while before you even realize that you’ve forgotten an important attachment to an email or that you forgot to CC someone. Luckily, it’s easy to extend the cancellation period. Here’s how to configure the cancellation period in Gmail:
Step 1: Open the options menu in Gmail by clicking on the gear icon.