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Mailplane vs Orbit: catalog facts
Mailplane	Orbit
Paid Paid license; the current version 4 download is for existing license holders.	Paid One-time purchase after a 14-day free trial with no card needed.
macOS	macOS
Handles many Gmail accounts in one window Menu bar notifier with quick archive and reply	Each Google account isolated in its own session Uses the real Gmail and Google Workspace web apps
Mac only and limited to Google accounts New version 5 not yet released; version 4 is for existing license holders	Mac only Only for Google accounts, not other mail providers
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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