LetterDuck vs Zoho Mail: the $1 seat against the $50 domain
Zoho is the budget champion of per-seat email and we are not going to argue otherwise. The question is what happens when mailboxes are not the whole job.
What each one is
Zoho Mail is the mailbox-hosting arm of the sprawling Zoho suite, and it is the cheapest credible custom-domain email on the market. Mail Lite is $1 per user per month (5 GB) or $1.25 (10 GB), annual billing only. Mail Premium at $4 adds compliance-grade features (retention, eDiscovery, S/MIME, backup) that cost far more elsewhere. There is even a Forever Free plan for up to 5 users on one domain, something almost nobody else still offers in 2026, though it works only in Zoho's own web and mobile apps. Step up to Workplace Standard at $3 per user (annual) and you get a full office suite: docs, sheets, chat, video meetings.
LetterDuck is an email workspace for one domain at a flat $50 a month: a threaded team inbox covering every address, reply-as-any-address, a newsletter composer with a designed template, and deliverability run for you (SPF, DKIM, DMARC, warm-up throttle, automatic suppression, RFC 8058 one-click unsubscribe). Unlimited addresses, unlimited seats, currently in waitlist mode. It replaces a mailbox host plus a newsletter platform, which is the only fair frame for its price.
What each costs
| Monthly cost at | Zoho Mail | LetterDuck |
|---|---|---|
| 1 person | $1 | $50 flat |
| 5 people | $5 | $50 flat |
| 10 people | $10 | $50 flat |
| Zoho Mail | Mail Lite at $1 per user per month, billed annually only ($12 per user per year, paid up front). | pricing page |
| LetterDuck | $50 per domain, flat. Unlimited addresses, contacts and subscribers. | pricing |
Prices last verified August 7, 2026 in the USD column of mail-pricing-val.json, the live feed that renders Zoho's own pricing page. All five Mail and Workplace plans come out of that one file.
Zoho's seat math is linear and tiny: $12 a year for one seat, $60 for five, $120 for ten. LetterDuck never beats that on raw mailbox price, at any team size. Let us say it plainly, because most comparison pages will not: if the requirement is "email at our domain for a few people," Zoho is roughly a tenth of our price and a perfectly good product.
The math changes when the domain publishes. Zoho Mail is mailbox hosting; a newsletter needs a separate sending product with real unsubscribe handling, and blasting bulk mail through a mailbox host is a fast way to burn the domain's reputation. Price a real stack: a five-person team with a 5,000-contact newsletter pays Zoho Mail Lite $5 a month (annual billing) plus, say, Mailchimp Essentials at $75 a month at that list size (monthly billing, verified August 2026). That is $80 a month, about $960 a year, across two logins, two support queues, and two DNS setups. LetterDuck is $50 flat for both halves. The same two-tool arithmetic runs across all fourteen providers we price, and the mailbox half is almost never the expensive one.
One structural note: Mail Lite and Mail Premium have no monthly billing option at all. You prepay twelve months per seat. The amounts are small, but if you add seats mid-year across a growing team, the prepaid-annual bookkeeping is yours to carry. If you are surveying the whole per-seat field before deciding, our Google Workspace alternatives roundup lines the suites up side by side, Zoho included.
Feature by feature
| Capability | Zoho Mail | LetterDuck |
|---|---|---|
| Price for 3 mailboxes | $3/month billed annually ($36/year) | $50/month flat |
| Free tier | 5 users, 1 domain, web and mobile apps only | none; waitlist |
| IMAP / POP / ActiveSync | on paid plans (excluded from the free plan) | web workspace only |
| Office suite | Workplace Standard, $3/user annual, bundles docs, sheets, chat, meetings | email only |
| Compliance features | retention, eDiscovery, S/MIME, backup on Mail Premium ($4/user) | |
| Multiple domains on one account | supported on Mail Lite | $50 per domain, each its own workspace |
| Addresses without seats | every real mailbox is a recurring seat | unlimited; an address is a routing rule |
| Whole-domain shared inbox | mail lives in per-user mailboxes | every address, one threaded view |
| Reply from any address | per-mailbox aliases | any teammate, any From address |
| Newsletter sending | mailbox hosting; bulk mail needs a separate product | composer, templates, per-recipient unsubscribe |
| Deliverability managed | DNS setup docs; monitoring is on you | SPF, DKIM, DMARC, warm-up, suppression, RFC 8058 |
| Monthly billing | Mail plans are annual-only | flat monthly |
Choose Zoho Mail if
- You are one to five people who need mailboxes and nothing else. $12 per seat per year is the best deal in email, full stop.
- You read mail in Apple Mail, Outlook, or Thunderbird. Zoho's paid plans speak IMAP, POP, and ActiveSync; we do not.
- You need compliance machinery (retention, eDiscovery, S/MIME) at small-business prices. Mail Premium at $4 per user is remarkable for what it includes.
- You want the wider suite cheap: Workplace Standard at $3 per user annual undercuts Google Workspace and Microsoft 365 by more than half.
- Your newsletter either does not exist or already lives happily somewhere else.
Choose LetterDuck if
- One domain needs mailboxes and a newsletter, and you would rather pay one flat bill than run a two-product stack.
- You want tips@, press@, orders@, and every future address to exist the moment you think of it, with no new seat attached. On our side an address is a routing rule in the inbound pipeline, not a billable object.
- The whole team should see and answer the domain's mail in one threaded place instead of forwarding between per-user mailboxes.
- You do not want to be your own deliverability engineer. We configure the DNS, throttle the warm-up, suppress bounces automatically, and stamp RFC 8058 one-click unsubscribe headers on every campaign send.
- You are a media site or small publisher: the mailboxes-plus-newsletter bundle on one domain is precisely the shape of that job.
Migrating from Zoho Mail to LetterDuck
Zoho's annual prepay sets the schedule: you have paid through your renewal date, so aim the cutover there and lose nothing. When your waitlist invite arrives:
- Export your existing mail over IMAP from each paid mailbox using any desktop client. Note the gotcha: the Forever Free plan has no IMAP or POP, so free-plan mail can only be exported through Zoho's own migration and export tooling, not a standard client.
- Add LetterDuck's generated DNS records for the domain: MX for inbound plus SPF, DKIM, and DMARC for authenticated sending. One paste session in your DNS panel.
- Recreate addresses as routing rules. Every alias and shared address you had, plus the ones you never made because they would have cost a seat.
- Import your newsletter list if one exists elsewhere, unsubscribes included, so prior opt-outs stay honored.
- Parallel-run for a week. Keep Zoho live until every address round-trips correctly. Our own production pipeline is watched by a canary probe that traverses DNS, routing, parsing, and storage every 2 hours; we take inbound loss seriously because we have instrumented for it.
Realistic time: an afternoon of exports and DNS, a quiet week of parallel running, cutover at your Zoho renewal so the prepaid year is fully used.
