Zoho Mail is the cheapest real mailbox per user. MCPmailer gives agents addresses with no seat, no IMAP tier, and quotas built for software.
Human mailboxes · Zoho Mail claims checked July 2026
Zoho Mail is the value pick in hosted email: roughly a dollar per user a month on Mail Lite, four on Premium, with a genuine free tier for a handful of users on one domain. It is the email component of a much larger and cheaper office suite, and for humans it is a lot of product for the money.
If you want a normal mailbox a person logs into, on your domain, for the least money, Zoho is hard to beat and we are not competing for that job. It is also the sensible choice if your agent must live inside a mailbox a colleague also reads.
The price stops being the deciding factor once the mailbox has to be driven by software. Every agent is another user, IMAP and POP are absent from the free tier so a prototype starts paid, and nothing in a hosted mailbox distinguishes a reply from cold outreach or gives you a tool surface an agent can use directly.
Per-user pricing is fine for ten people and wrong for a fleet of narrow agents, because an agent that sends forty emails a month costs the same as a full-time employee. We charge a base plan plus metered mail, so the cost tracks what the agents actually do.
Zoho's free plan omits IMAP and POP, so the cheapest way to try an agent against a real mailbox is a paid plan and an app password. Our free tier is 3,000 emails a month with the full MCP surface, because an agent that cannot be driven is not worth evaluating.
IMAP hands a model raw folders and MIME. Ours hands it get_thread, search_inbox, wait_for_reply, and structured refusals. The gap is not convenience: it decides whether the agent can reason about a conversation or has to reassemble one first.
Every row is a claim we could defend with their documentation open beside it. Where they are ahead, the row says so.
Almost nobody should move their people off hosted email. Move the automation.
People stay on Zoho
Mailboxes, calendar, and the rest of the suite are untouched.
Agents get a subdomain
agents.yourcompany.com, separate from the domain your staff send from, so agent behaviour cannot affect their delivery.
Retire the app passwords
A key scoped to one mailbox replaces an IMAP credential that could read everything in the account.
Yes, with a paid plan and an app password over IMAP and SMTP. You are then writing MIME parsing, thread matching, and your own oversight, and paying per agent.
For a few agents that barely send, yes. Once you count parsing, threading, and per-agent revocation as work you would otherwise do yourself, the comparison changes.
Not for an automated one. IMAP and POP are not included, so there is no clean programmatic path in.
Better not to. Put agents on their own subdomain so a cold-send mistake cannot damage the reputation your staff depend on.
Your people keep their mailboxes. Your agents get their own, on a subdomain, with keys you can revoke one at a time and quotas written for software.
The free tier is 3,000 emails a month across three agent inboxes, no card, with receiving, threading, and search included. Enough to watch a real conversation happen before you decide.
More Human mailboxes