Thundermail Early Access Opens as Thunderbird Preps Email Launch

What you get

Each account includes up to 15 email addresses and three custom domains, plus 30 GB of mail storage. It also comes with 60 GB of send storage for Thunderbird Send, an end-to-end encrypted file-sharing and large-attachment service. The organization plans to offer additional features and services at different price points.

Sign-up screens suggest the basic plan will cost $6 per month, billed annually. An early-access participant paid £55 for a year. That may deter people used to free accounts from Gmail, Outlook.com or Proton Mail, although the first two serve ads alongside messages.

The web interface is clean and uncluttered, with a folder pane on the left and a larger message pane on the right, similar to Gmail. A welcome screen introduces features such as working on several drafts at once, scheduled delivery, folders, contact lists and identities. Early impressions show no big surprises, and everything works as expected.

What comes next

Thunderbird has not said when Thundermail will open to everyone. It previously stated that a full launch is expected sometime in 2026. Firefox and Thunderbird recently moved to a fortnightly release schedule in line with Mozilla's plans, and Thunderbird gained support for Microsoft Exchange late last year.