Zoho Mail

Judgement

What it is

Complete system

What it does

Ad-free business email hosting with calendar, contacts, notes and tasks, part of the Zoho suite.

Adopt it when

A small business wants low-cost email on its own domain, particularly if it uses other Zoho apps.

Watch out

The free plan is limited and lacks IMAP, and third-party tools integrate with it less often.

Ready for

Production-ready

Runs as

Cloud service and mobile app

What the license allows

Closed source: you use it under the maker's terms and cannot change or resell the code.

Judged on 2026-11-03 from the maker's description and Wikipedia. The license and age lines are worked out directly.

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Other commercial email servers and webmail

1. 1
   Gmail (Google Workspace) Google

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2. 2
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   Complete system Production-ready Privacy is your first concern and you want encrypted email, especially between Proton users.

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3. 3
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   Fast, private email hosting for you or your business. More productive, lightning fast, simple and built to save you time.

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4. 4
   Microsoft Exchange Online Microsoft

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Under it

Every program, Zoho Mail included, runs on a microchip.

How compilers were built, back to punched paper tape