Custom Domains

📄️ FAQ about using e-mail addresses with a custom domain name

I haven’t registered a custom domain name yet. Can I do this through mailbox.org?

📄️ How to configure e-mail clients automatically through DNS

There are some e-mail programs that make it easy for users to add new mailboxes or e-mail addresses. These programs offer wizard tools that automatically collect the configuration data that is required for the user to be able to send and receive e-mails. Usually, the only information a user needs to enter is the e-mail address to set up, as well as a username and password. Mail clients like Thunderbird or Outlook expect this configuration file at a URL like https//autoconfig.mailbox.org/mail/config-v1.1.xml.

📄️ How to set DKIM entries with TXT fields in the DNS

DKIM through TXT is deprecated

📄️ How to set up a catch-all alias with a custom domain name

If you are using mailbox.org with a custom domain name, it is possible to set up a so-called catch-all filter. That means all e-mails sent to the domain will be received at a “catch-all” alias address, even if the particular e-mail or alias used by the sender does not actually exist on the server.

📄️ How to specify a key server in the SRV record

Finding the correct PGP key of an e-mail recipient is a frequent problem for anyone who uses e-mail encryption to communicate securely with others. Certain software applications will be able to determine the right keys to use automatically, but only if the "HKPS-SRV" record for the e-mail domain was configured correctly in the Domain Name System (DNS) beforehand.

📄️ SPF, DKIM, and DMARC - How to improve spam reputation and avoid bounces

How to Improve Spam Reputation and avoid Bounces

📄️ Using e-mails with a custom domain

mailbox.org customers (except those on the LIGHT price plan) may use our servers to send e-mails from addresses that have another domain name (e.g., me@example.com). Similarly, it is possible to use e-mail addresses from an external domain as aliases for your mailbox.org account (the maximum number of aliases permitted will depend on your chosen price plan). Once your custom domain name has been set up properly with mailbox.org, you will also receive e-mails in your inbox with us that are addressed to the e-mail addresses of that domain. Of course, you can also use the external e-mail addresses as a sender identity and define one of them as your main address. The instructions below outline how this works, possible issues you should bear in mind, and how to set everything up.