mailbox.org vs Proton Mail vs Fastmail

Side by side from 572 real reviews. Every count is the same as on each service’s page.

Reviews

72 signal

41 reviews

79 signal

295 reviews

95 signal

236 reviews

In short

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Most customers find it reliable for email with a custom domain, an easy switch from Gmail or Google Workspace, and good spam filtering.

Easy migration from Gmail or Google Workspace and human support, though the calendar feels clunky.

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Specs

Free plan
Not listed
Free plan
Yes
Free plan
No

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