There are many free email service designed to be used like a "use and throw".

     Quite often in the cyber world, you have to provide your email only for one-time use. You cannot provide your main email and need a temporary one, but creating a collaborative email address will take a lot of time and effort. Temporary emails are the solution of this problem.

     You neither have to register nor login in those temporary email platforms, there is no verification requirement at all. Once you reach their homepage, you will be given a temporary email address that you can use immediately.

     Some of the best disposable email platforms are -
Temp-mail.org, Tempali.com, Tempmailo.com, Mail.tm, Tempmail.net, Temp-mail.io

     Any email that will be sent to that temporary email address will be received on the same platform, you can open and deal with the mails there without any issue.

     Such email is only valid for a few hours, therefore, it should be used soon.

     There is also a premium option from providers which comes with extra features, and allows you to use it more than normal "use and throw" .