Short inbox
No account. The address is here when the page opens, for 3 hours, extendable, never past 24 hours. Use it for one code, one notice, one form you will not reopen.
You read the letters on this page. Keep the link, or let the clock end. When it ends, the address and the mail go together.
Long forward
If the site will write again, a one-time address is the wrong tool. An alias sends mail to your own inbox and keeps 30 days here. When one site turns noisy, pause that alias.
Sign in once with a 6-digit code to your real inbox. There is no password. The forward link in the header opens this gear.