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Posteo vs Purelymail: catalog facts
Posteo	Purelymail
Paid 1 euro per month, with paid upgrades for storage and aliases.	Paid Usage-based pricing; one address with 3 GB of storage costs about $10 a year.
Web	Web
Signup without personal details Low fixed monthly price	Cheap, with no per-user charges Multiple domains and users included
No free tier 4 GB base storage	Some obscure mail servers occasionally block its outgoing mail Small provider with a minimal feature set
Web application, Hosted service	Web application, Hosted service
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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