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MailStore Home vs Mail Backup X: catalog facts
MailStore Home	Mail Backup X
Freemium Free for personal use. Business editions are paid.	Paid Free to try, with a paid licence to keep using it.
Windows	Windows, macOS
One searchable archive across many accounts and mail clients Archived mail can be exported back into a mail client later	Supports many desktop clients and online mail services Archive viewer and format converter included
Free for personal use only; business use needs the paid product Windows only, closed source	Proprietary and paid after the trial Developer details are not clear from the site
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.