addy.io: Anonymous Email Forwarding. Protect your real email address using email aliases.

Clearnet: https://addy.io

Open-source: https://github.com/anonaddy/anonaddy

Features: Disposable email addresses, Custom domain support, Multiple inboxes, Catch-all address, Browser extensions, Email forwarding, Spam filtering, Alias generation, API access, Self-destructing addresses, Dark mode, PGP encryption support, Web interface, Email blocking rules, Open-source platform