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

Note on using own domains with mailbox

In this section of the frequently asked questions (FAQ) you will find important information about using your own domains in connection with mailbox.

Please note that using your own domain requires technical understanding, especially when dealing with DNS settings and domain registration. Our Knowledge Base provides detailed instructions on this. If you have questions about configuration or switching your provider, our user forum is also available to help you.

You can reach the user forum via the following link: mailbox User Forum

With these FAQs, we aim to enable you to use your own domain with mailbox safely and smoothly and hope you find all important information here.

If you need assistance setting up your own domain, our Knowledge Base article Use email addresses with your own domain will help you.

I don’t have my own domain. Can I register a domain via mailbox?

No, because mailbox is meant to be used anonymously. For a domain registration, however, we would need your address data. Also, mailbox works as a prepaid system. If we were to register domains, the risk would be too high that we might have to delete them at some point, which would cause complications.

I don’t know what "DNS" is. What should I change where and how?

This usage option requires a certain technical understanding of how domains work and what DNS is. If you have purchased your own domain, then you will have done this via a provider (“registrar”) of your choice. This article in our Knowledge Base will help you further. Otherwise, please contact the support of your provider who manages your domain.

What if I no longer want to run my own domain via mailbox?

You are free to change this at any time. Set the MX records of your domain to the data of the desired new provider and don’t forget to delete the created aliases from your mailbox account.

Can I use catch-all addresses with my own domain at mailbox?

Yes, this is possible. Details can be found in the separate article on own domain and catch-all addresses.

Is the number of these email addresses limited?

Yes. Created aliases under your own domain are from mailbox’s point of view normal aliases. The maximum allowed number of these aliases depends on which plan you have chosen. Details can be found in our plan table. Here is an overview:

• Premium plan: 250 aliases with own domain
• Standard plan: 50 aliases with own domain
• Light plan: Aliases with own domain only in family accounts

Aliases for usernames postmaster@, abuse@, hostmaster@, and webmaster@ are not counted and can be created freely. Please create the previously mentioned aliases before you reach the maximum possible number of aliases.