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Pegasus Mail vs The Bat!: catalog facts
Pegasus Mail	The Bat!
Free Free to use; the developer accepts donations.	Paid Commercial software from Ritlabs; prices are not listed on the product page.
Windows	Windows
Free with no paid tier Decades of continuous development	Optional encryption of the local message base Blocks tracking pixels and malicious code in mail
Windows only Traditional interface and slow release pace	Windows only Commercial license required
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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