Undo Send an e-mail on Gmail

Have you ever sent an e-mail and realized you made a terrible mistake. Don’t you sometimes wish there was an undo send message button somewhere in your e-mail. Wouldn’t that just save you embarrassment?  Well the people at Google thought of that and they came up with a way to solve your problem. Keep in mind it only works for a few seconds after you send the e-mail.

In order to undo send an e-mail on gmail, you must first activate the option. To do that, follow the steps below:

1. Click the  gear gear in the top right.
2. Click on settings.
3. Follow the steps shown in the 4 steps shown below: (click on the image to magnify it)
Screen Shot 2014-01-13 at 1.33.28 PM

4. To test this feature. Send a test e-mail. You should see this message.

Screen Shot 2014-01-13 at 12.09.51 PM

5.Click Undo. It’s like your mail never existed.

[alert type=”Tip” close=”true or false”]Tip: you can adjust the cancelation period which is the time after you send the mail when you can still cancel the message. To do that you will find an option under general settings. [/alert]


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This methodology requires the most effort to implement but it results in the most optimised recurring cost and will provide the best scalability for apps. This involves re-adapting the code of applications and the heavy use of SAAS solutions in order to replace existing hosted applications.


This method utilizes the power of  PAAS services, like transferring a database to an as-a-service model,  the use of containers for some apps or the use of network/security functions as a service. Greater scalability and lower cost of operation is achieved.

Re-Host (Lift & Shift)

the migration of workloads from  to the cloud without changing the architecture. Machines get to keep their  OS and apps. This is the quickest and easy way to migrate, but since its  utilising IAAS, its is also the most expensive on the long term.