E-mail aliasing
An email alias is simply a forwarding email address. The term alias expansion is sometimes used to indicate a specific mode of email forwarding, thereby implying a more generic meaning of the term email alias as an address that is forwarded in a simplistic fashion[…]
Source: https://wikiless.lunar.icu/wiki/Email_alias?lang=en
Fallback reference: https://en.wikipedia.org/wiki/Email_alias
E-mail aliasing is a technique to obfuscate your e-mail from malicious actors.
Your e-mails are sent to one of the aliasing services and are then forwarded to your proper e-mail address if one of those actor are sending spam deactivate the service and e voilà your inbox aren't spammed anymore.
https://simplelogin.io/ https://anonaddy.com/
Can also create E-mail aliases