[zeeed]

If you’re on Gmail, there’s “plus addressing” - this allows you to append any term after your email - and then sort accordingly.

So if your Gmail is [e-mail] you can use [e-mail] and the mail will still end up in your mailbox. Then you can create a rule that sorts incoming mails accordingly.

[Hnrobert42]

I find plus addressing unreliable. Not all websites allow you to have the +.