Every alias on your Thundermail account, whether it’s @thundermail.com, @tb.pro, or at one of your own custom domains, delivers into the same inbox as your primary address.
An alias is a forwarding address, not a separate mailbox. Mail sent to it lands in exactly the same place as mail sent to your primary address, right alongside everything else.
How do aliases work?
- One inbox, no matter how many aliases: Up to 15 @thundermail.com or @tb.pro alias addresses, and unlimited aliases on a custom domain, all deliver to the same inbox.
- Custom domains work the same way: Adding your own domain doesn’t change this. Aliases on a custom domain also belong to one Thundermail account inbox.
- Aliases aren’t accounts: They don’t have their own login or password, so they can’t be handed to someone else as their own private mailbox.
This question comes up most for families or small teams hoping to give each person their own inbox on a shared domain. A custom domain doesn’t enable that on its own. For that, each person needs their own separate Thundermail account rather than an alias on someone else’s account.
Want inboxes split by aliases instead? There’s an item for this on our Ideas board - Feel free to upvote it and describe your use case.
Thundermail is currently in beta. See something missing or incorrect in our instructions? Did you find a bug or have a great feature idea? Please let us know!