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Forward Email vs 33Mail: catalog facts
Forward Email	33Mail
Freemium Free tier available for custom domain forwarding, open source.	Free Free for unlimited aliases on the 33mail subdomain.
Web	Web
Unlimited aliases and generous free storage for custom domain forwarding Fully open source rather than a closed proprietary forwarder	Unlimited free aliases on the service's subdomain Simple to create a new alias on demand for any signup
Requires owning and configuring a custom domain to get the full benefit Advanced use cases may require comfort with DNS configuration	Aliases live on 33mail's shared subdomain rather than a custom domain on the free tier Long-running service with a dated interface compared to newer alternatives
Web application	Web application
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.