Hushmail is a web-based email service offering PGP-encrypted e-mail, file storage, vanity domain service, and instant messaging (Hush Messenger). Hushmail uses OpenPGP standards and the source is available for download. Additional security features include hidden IP addresses in e-mail headers. A free e-mail account has a storage limit of 25MB, and no IMAP or Post Office Protocol (POP3) service.
If a user does not use a free account for three consecutive weeks, Hushmail deactivates the account. Customers attempting to reactivate a disabled account are required to pay for a Hushmail subscription. Paid accounts provide 1â€“10GB of storage, as well as IMAP and POP3 service.
If public encryption keys are available to both recipient and sender (either both are Hushmail users or have uploaded PGP keys to the Hush keyserver), Hushmail can convey authenticated, encrypted messages in both directions. For recipients for whom no public key is available, Hushmail will allow a message to be encrypted by a password (with a password hint) and stored for pickup by the recipient, or the message can be sent in cleartext.
Hushmail was founded by Cliff Baltzley in 1999 after leaving Ultimate Privacy, and is based in Vancouver. The servers are in Vancouver, and there are also offices in Dublin, Ireland; Delaware, United States; and Anguilla.