Custom Domains

This section of the knowledge base provides articles about the setup and use of custom domain names with mailbox.org. All of our price plans (excluding the LIGHT Tarif) allow users to integrate e-mail addresses from other providers – not just addresses belonging to other e-mail services but also e-mail addresses that use a custom domain name like my.address@example.com. For this to work properly, users need to adjust a few basic configuration settings in the Domain Name System (DNS), which can normally be done through interfaces of the provider with which the domain name was registered.

📄️ 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 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.