33Mail vs anon.li

33Mail creates private email aliases and forwards messages sent to them to an existing email address. An alias is created automatically when email first arrives, and users can block an alias to stop receiving its messages. With anonymous replies enabled, users can reply to forwarded mail through 33Mail; the service removes header information relating to their actual email address. Premium accounts can use a custom domain by pointing its MX record to 33Mail. The service is web-based and also lists a browser extension. Lite is free and includes 10MB monthly bandwidth, with alias creation limited to five per 30-minute period. Premium costs $1 a month and includes 50MB monthly bandwidth, 20 anonymous replies per day, one custom domain, and one additional username. Pro costs $5 a month; Enterprise costs $50 a month. Attachments up to 10MB count toward bandwidth, which is measured over a rolling 30-day window. 33Mail says it warns users who exceed their bandwidth limit and treats dropping emails as a last resort. Its terms say user data is used to provide the service and is not shared with third parties except as needed for law enforcement requests. Brothers Ian and Andrew Clarke conceived the service, which forwarded its first email in August 2010.

anon.li combines private email aliases, encrypted file sharing, and confidential forms in one account. Aliases forward messages to verified inboxes, allow replies without revealing a real address, and remove known tracking pixels and tracking parameters from forwarded HTML email. Drop encrypts files in the browser with AES-256-GCM and supports transfers up to 250GB; recipients can decrypt them in a browser without an account. Form supports confidential intake such as whistleblowing, patient intake, and legal contact. Each form uses its own P-256 keypair, and submitters' browsers encrypt answers with AES-256-GCM. The service has a REST API, CLI, MCP server, and browser extensions for Firefox and Chrome. Optional TOTP two-factor authentication includes backup codes. The maker says alias mail is forwarded rather than stored in a hosted mailbox, while Drop and Form content is stored as ciphertext. The free plan includes 10 aliases, one custom alias, one recipient, 5GB bandwidth, a 5GB maximum file size, three-day file expiry, three forms, and 50 submissions per month. Paid plans start at $2.49/mo; no free trial is offered.