Welcome to the mailbox.org user forum!
How many custom domains can you add?
Need Answer
Its not clear from the documentation how many domains you can add. I require two. Is this possible on a plan?
The same question 
It is indeed not clear.
What I think I understand from reading for a while now is that you are not limited by domains, but by custom domain aliases. If you only use catch-all, you can link as many domains as you can link custom domain aliases.
I opened a trial account on the Standard plan and had access to one custom domain alias. Meaning I could use the free aliases abuse, webmaster etc. and a catch-all, which I successfully tested.
Nothing changed after switching to a trial of the Premium plan.
"the maximum number of aliases permitted will depend on your chosen price plan" is said in the user documentation Using e-mails with a custom domain.
Even the Light plans seem to get three custom domain aliases: "They can now create up to three additional e-mail-addresses with custom domains." is said on this blog post from September 2022.
Best hint I found is this blog post from April 2021. Looks similar to the current plan comparison, but what is now just a
checkmark was an actual informative number back then: 50 custom domain aliases on the Standard plan:
To the left is the blog post from 2021 and to the right is the current pricing table.
Can somebody confirm what is the case for today?
It is indeed not clear.
What I think I understand from reading for a while now is that you are not limited by domains, but by custom domain aliases. If you only use catch-all, you can link as many domains as you can link custom domain aliases.
I opened a trial account on the Standard plan and had access to one custom domain alias. Meaning I could use the free aliases abuse, webmaster etc. and a catch-all, which I successfully tested.
Nothing changed after switching to a trial of the Premium plan.
"the maximum number of aliases permitted will depend on your chosen price plan" is said in the user documentation Using e-mails with a custom domain.
Even the Light plans seem to get three custom domain aliases: "They can now create up to three additional e-mail-addresses with custom domains." is said on this blog post from September 2022.
Best hint I found is this blog post from April 2021. Looks similar to the current plan comparison, but what is now just a
checkmark was an actual informative number back then: 50 custom domain aliases on the Standard plan:
To the left is the blog post from 2021 and to the right is the current pricing table.
Can somebody confirm what is the case for today?
I can confirm that after activating the account with my first payment I now have access to 50 custom domain aliases on the 3€ Standard plan.
Support confirmed that they are revising their knowledge base and are aware of this missing information.
They also confirmed that each custom domain alias can belong to a different domain, so you can connect 50 distinct domain names to one mailbox on Standard plan.
I can confirm that after activating the account with my first payment I now have access to 50 custom domain aliases on the 3€ Standard plan.
Support confirmed that they are revising their knowledge base and are aware of this missing information.
They also confirmed that each custom domain alias can belong to a different domain, so you can connect 50 distinct domain names to one mailbox on Standard plan.
Here is the reply I got from technical support:
Here is the reply I got from technical support:
Replies have been locked on this page!