Temporary email is kind of service, when anyone want to use the email for a very short time and then discard it. It can be useful, when you want to register some free service and do not want to be bothered by spam in your private email box.
There is several ways to achieve this – first, common way is to use some free email service like outlook, gmail or yandex.mail. There are dozens of these free mail servers. This way is good, but you put some load on servers, which are used by other people and basically you are adding costs to the free email providers.
If you really want just the temporary email, then there are specialised services for that. They offer temporary email address with “self-destruct” feature. After some period, the email is discarded with all its content. With a quick search, you will find plenty of them. Just choose some, use it and do not care anymore.
EUR 12 / Month
EUR 136 / Month