Emails sent between EtherMail users: always end-to-end encrypted

Emails from EtherMail users to non EtherMail users: encrypted with TLS if the non-EtherMail mail server supports it (most providers such as Gmail, Yahoo, Hotmail, etc, support TLS). Note, since these messages are encrypted but not end-to-end encrypted, Gmail, Yahoo, Hotmail, etc will be able to read these messages and hand them over

Emails from non-EtherMail users to EtherMail users: unless you use PGP, the email message is encrypted in transit using TLS and stored on our servers using zero-access encryption. However, It is not end-to-end encrypted, and might be accessible to the sender’s email service.