retracting a sent email

How can I pull a sent email back? 
I sent an email mistakenly and need to retract it before it is read. Does this email allow that?

No, unfortunately it does not, at least not for SMPT.  I’m not sure about Exchange, as I do not use it.

Sorry to hear about your problem,but sadly once sent it can no longer be retrieved. It will now be sitting on the recipient’s email server awaiting the next time their device makes a download request.

Thank you very much. 

Thank you Jay.