One account, multiple domains
Multi-domain email hosting without a fee for every domain
Manage mailboxes, forwarding aliases and authenticated SMTP for client work, business brands or domain portfolios from one place. Every plan supports unlimited domains.
Unlimited domains does not mean unlimited mailboxes, forwarders, storage or sending; those allowances follow your plan.
Keep domain email organised as your portfolio grows
Separate each domain’s identity and DNS while managing the service and plan centrally.
Unlimited domains on every plan
Add the domains you operate without opening a new subscription solely because another domain needs email.
Independent domain authentication
Configure and verify the required DNS records per domain so each sending identity can align correctly.
Mix mailboxes and forwarding
Reserve hosted inboxes for active users and use forwarding aliases where an address only needs inbound routing.
Centralised administration
Review domains, identities and delivery activity without maintaining separate email-control accounts for every project.
Hosting for more than one brand
What multi-domain email hosting should simplify
Agencies, freelancers and multi-brand businesses often own more domains than they need mailboxes. Multi-domain hosting lets those domains share one service account while retaining distinct addresses, DNS configuration and public identities. That reduces account sprawl without blending one brand into another.
SMTP Zen allows unlimited domains on each plan, but capacity remains concrete. Your selected plan determines mailbox count, forwarder allowance, storage and sending limits. This makes the useful cost question “what resources do our users need?” rather than “how many domains can we afford to attach?”
Organise multiple domains in three steps
Add domains deliberately, verify each one and allocate limited resources where they create the most value.
- 1
Inventory domains and addresses
List the domains that need full sending mailboxes, named forwarders or no mail service at all.
- 2
Verify DNS per domain
Publish the records shown for each domain and confirm authentication before moving important traffic.
- 3
Allocate and test resources
Create mailboxes and forwarders within the plan allowance, then test incoming mail, SMTP sending and replies for every active address.
Clear separation without separate subscriptions
A central account is most useful when domain ownership, identities and capacity remain easy to understand.
Agencies and client domains
Keep a record of who owns each domain and which DNS provider controls it. Use distinct credentials and handover notes rather than sharing one mailbox login across unrelated clients.
Brands and regional domains
Give each brand or market an appropriate address while forwarding low-traffic roles to a shared operational team. A reply should still use the identity the recipient expects.
Capacity planning
Count the people who require stored mailboxes, the addresses that can be forwarders and the storage they need. You can upgrade your plan or add more mailbox, forwarder and storage capacity from the Plan Manager at any time, within the displayed add-on limits.
Multi-domain hosting use cases
Digital agencies
Support selected client and project domains from a central service while keeping authentication and addresses distinct.
Freelancers and studios
Run email for a main business, product domains and side projects without paying a separate base fee for each domain.
Domain investors and operators
Route enquiries across a portfolio and create full mailboxes only for domains that need ongoing conversations.
Multi-domain email hosting questions
Bring your domains into one practical email setup
Start with a domain inventory, allocate mailboxes where storage and sending are needed, and forward the rest.
Set up multi-domain email