Just how long are emails saved in Temp Mail? Emails are saved in Temp Mail for as many as 48 several hours. Right after 48 hrs, the email and all of its contents are deleted permanently. Now you can put in the application in your machine. You will notice https://chromewebstore.google.com/detail/temp-mail-pw-disposable-t/aidndodkpjkakjdhhmkkmjgehflbjbae