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Mixmax vs Mailbutler: catalog facts
Mixmax	Mailbutler
Freemium Free to start with no credit card; paid plans add more features.	Paid Subscription service with a 14-day free trial.
Web, Browser extension	macOS, Browser extension
Works inside the Gmail interface Email sequences with per-person tracking	Works inside Apple Mail and Gmail Mail merge with scheduled sending
Tied to Gmail and the Chrome extension Focused on sales outreach rather than general email	Email tracking reveals recipient activity, which some recipients object to Requires a subscription after the trial
Hosted service, Browser extension	Downloadable app, Browser extension
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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