Mailboxes for more than one domain in the same hosting: creating, receiving and sending

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The short answer: on hosting with more than one domain, each domain can have its own mailboxes. ana@ on one domain and ana@ on the other are two different mailboxes, each with its own password and quota, sharing the plan's space. If what you want is for both names to reach the same mailbox, do not create mailboxes twice: forward one domain to the other.

First: does your plan take more than one domain?

The number of domains per plan is on the hosting plans page. On the Professional E-mail plan, talk to us before counting on a second domain. The second domain is added to the account in cPanel, on the domains page, and must use our nameservers (or at least have its MX records pointing to us).

Two ways to use both domains

What you want How it is done When it fits
Separate mailboxes on each domain Create mailboxes under Email Accounts, picking the domain from the list Two brands, two companies, or teams that do not overlap
Both names reaching the same mailboxes Under Forwarders, forward the whole secondary domain to the main one An old name, a short name, a version with another extension

Mailboxes on each domain: what changes

1 When you create a mailbox, pick the right domain from the Email Accounts list. It is the most common mistake: creating ana@ on the wrong domain.
2 Each domain has its own SPF, DKIM and DMARC. Check both under Email Deliverability in cPanel: one can be right and the other not.
3 On devices, the server is mail. followed by that mailbox's domain, and the username is always the full address.
4 The space is shared by every mailbox on the account, across both domains. Hand out quotas with the total in mind.

Replying from the right domain

Whoever handles both domains should have both accounts in their e-mail program or phone, and always reply from the account the message arrived at. That way the customer sees the brand address they know, and each message leaves with its own domain's signature and authentication.

Mind forwarding and replies. If you forward domain B to A, replies go out from A. To customers who only know B, that can look like another company. If the two brands must look separate, use separate mailboxes.
A domain only for the website? If the second domain will have no e-mail, create no mailboxes on it and leave the default address rejecting mail. For the differences between a redirect, an alias and a separate site, see a second domain for the same business.

Want to add a second domain to your company e-mail? Talk to us before you change any records.

Open a support ticket

SEE ALSO

A second domain for the same business: redirect, alias or separate site

Catch-all, forwarders and aliases: the three that get confused

How to create an e-mail account in cPanel?

SPF, DKIM and DMARC: why your e-mail lands in spam

Your company changed its name: moving every mailbox to a new domain without losing mail

Email Routing in cPanel: local, remote or automatic, and the mail that vanishes

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