Google Workspace alternatives when you run more than one business.

Google Workspace's list price is $7 per user per month for Business Starter. That's genuinely a per-user number — Workspace does not charge extra to add a second, third, or tenth domain to one seat as a "secondary domain."

The multiplier shows up the moment separation matters. Secondary domains inside one Workspace tenant share that tenant's inbox identity, its sending reputation, and its admin console — fine for aliases, not fine for three businesses that need to look, send, and authenticate as genuinely separate entities. So the honest operator move is one Workspace tenant per business: a $7/user/month bill for every entity you own. Run five businesses solo and the "per-user" plan is now a $35/month, five-admin-console, five-DMARC-dashboard bill — the per-user price times the number of domains that need to stay apart.

That is the arithmetic this page prices out below, next to what Migadu, Zoho, Fastmail, Purelymail, and Folio actually charge for the same shape of problem.

Migadu is the strongest pure cost play: flat per-account pricing with unlimited mailboxes and unlimited domains, so a portfolio of ten small businesses costs the same as one. The tradeoff is a self-serve mail-admin console — you configure DNS, aliases, and quotas by hand per domain.

Zoho Mail is the cheapest per-user number on the market and can host many domains under a single account. The tradeoff mirrors Workspace's secondary-domain problem: every domain shares one mailbox identity unless you pay per user per entity.

Fastmail is the best all-around independent webmail — real search, calendar, and contacts most budget providers skip — and Business plans allow multiple custom domains per seat.

Purelymail charges for infrastructure, not seats or domains, which makes it the cheapest option for a technically comfortable operator willing to skip a guided setup wizard.

Folio is built specifically for the shape this page is about: one human, several separately-branded businesses, each domain with its own DKIM key and sending reputation, one colour-striped inbox, and pricing that scales with domain count — never with seats or tenants.

Don't cut every domain's MX record on the same afternoon. Migrate one business at a time, starting with the lowest-stakes domain: run the free domain health check first, confirm the SPF, DKIM, and DMARC records that domain will need, then repoint MX and send a test message before touching the next domain.

Keep the old provider's mailbox live in read-only mode for a few weeks so nothing bounces during DNS propagation, and export the historical archive to a standard .mbox file before you cancel anything — an escape hatch that works with whichever provider you land on next, including one you haven't chosen yet.

Once one business is confirmed working end to end, repeat the same steps for the next domain instead of a single big-bang cutover across the whole portfolio.