Compare software

Posteo vs HEY: catalog facts
Posteo	HEY
Paid 1 euro per month, with paid upgrades for storage and aliases.	Paid Paid subscription service.
Web	Web
Signup without personal details Low fixed monthly price	Screens first-time senders before they reach the inbox Email and calendar from one provider
No free tier 4 GB base storage	Opinionated workflow that differs from traditional email Hosted service that requires a paid account
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 23, 2026

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