Business email hosting
Custom-domain mailbox servers and groupware; distinguishes email hosting from complete office suites and mail clients.
Paid tools and their alternatives
Each chip links to a comparison. Hover a tier letter for its meaning.
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Fastmail Business
USD 3 / seat / month -
Google Workspace
USD 7 / seat / month -
Microsoft 365
USD 5.40 / seat / month -
Zoho Mail
Not established
Why this category sits where it does
Broad reach, position 40 of 48. Custom-domain email serves businesses across functions; self-operated server selection and ongoing delivery operations chiefly concern IT teams. Qualitative audience reach, not a counted market estimate.
Audience: Organizations operating custom-domain employee email, and IT administrators responsible for delivery and mailbox infrastructure. Editorial estimate, not a measured market size. Sources: workspace.google.com, www.microsoft.com, docs.mailcow.email, www.fastmail.com, www.zoho.com. Checked 2026-10-21.