I prefer to blackhole everything in a Zoho account with the catchall[1] feature turned on, so I can just type random crap as the username when signing up like:
asdferhgg@generic.domain
The trick is to keep that domain renewed for as long as you're alive so nobody can take new ownership and pwn all your accounts as a result.
[1] https://www.zoho.com/mail/help/adminconsole/catch-all-setup....