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Apple Mail vs Twobird: catalog facts
Apple Mail	Twobird
Free Included free with macOS, iOS and iPadOS.	Free No pricing is listed on the homepage.
macOS, iOS	macOS
Preinstalled on Mac, iPhone and iPad Supports iCloud and other email providers	Notes, reminders and to-dos inside the inbox Collaborative notes within conversations
Only available on Apple devices Closed source	Site gives few details on supported platforms and email providers
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 23, 2026	Official website Full listing and sources Checked October 2, 2026

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