Assembly Line

Fastmail vs Gmail (Google Workspace)

Fastmail and Gmail (Google Workspace) are both email server software. Fastmail is a commercial product from Fastmail Pty Ltd. Gmail (Google Workspace) is a commercial product from Google.

Which to pick

Pick Fastmail when
An individual, family or small business wants fast, private email on its own domain without Google or Microsoft.
Pick Gmail (Google Workspace) when
A business wants reliable hosted email with strong spam filtering and works mostly in the browser.

Side by side

What it does

Paid, ad-free email hosting with calendars, contacts, custom domains and masked email addresses, built on open standards (IMAP, JMAP, CalDAV).

Business email on your own domain using Gmail, with spam filtering, shared calendars and admin controls through Google Workspace.

Watch out

No office suite or file storage included, and data is held in Australia and the US.

Moving away later is a chore, and shared mailboxes and delegation are weaker than in Exchange.

Ready for

Production-ready (both)

Runs as

Cloud service and mobile app (both)

Built with

Not published (both)

Source code

Closed source, sold by Fastmail Pty Ltd

Closed source, sold by Google

What the license allows

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

How widely known

586 Wikipedia readers a month on phones

90k Wikipedia readers a month on phones

Other comparisons

More email servers and webmail

Every email server product and project, ranked

Both sides were judged on 2026-11-03 from makers' descriptions, Wikipedia, READMEs and GitHub data. License, age and popularity lines are worked out directly.