addy.io creates email aliases that forward to a real inbox, letting users use different addresses for services and disable one if it leaks.
33mail vs Firefox Relay
How do 33mail and Firefox Relay compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.
| Directory detail | 33mail | Firefox Relay |
|---|---|---|
| What it is | 33mail creates private email aliases that forward messages to an existing inbox and lets users deactivate addresses or reply anonymously. | Mask email and phone details with Firefox Relay, which forwards messages to a real inbox. |
| Website | ||
| Type | Website | Website |
| Topic | ||
| Pricing | Not confirmed | Not confirmed |
| Platforms | Web | Browser extension, Web |
| Open source | Not stated | Not stated |
| Language | — | — |
| Alternatives |
Other options to consider
Sites similar to both 33mail and Firefox Relay.
Cloaked creates email and phone aliases plus passwords for signing up to services without sharing real contact information.
Create email aliases that forward to an inbox with Emcognito, then reply privately or suspend an alias.
Forward Email provides open-source email forwarding for custom domains, with aliases, storage, and IMAP, POP3, and SMTP access listed on its site.
AnonymMail creates free temporary email addresses without registration and lets users customize an address and receive messages in an inbox.
This Firefox extension simplifies using temporary email addresses from services including 10 Minute Mail and Anonbox.





