Mailspring
Open-source desktop email client for Mac, Windows, and Linux, built and maintained by Foundry376.
About Mailspring
Open-source desktop email client for Mac, Windows, and Linux, built and maintained by Foundry376.
Products
Free native desktop email client for Mac, Windows, and Linux with multi-account IMAP and Office 365 support, advanced search, signatures, unified inbox, translation, spell check...
Paid upgrade adding read receipts, link tracking, send later, follow-up reminders, templates, snooze, unlimited scheduled reminders, and mailbox insights.
Security and compliance
As reported by Mailspring. Ask for audit reports before you buy.
- Email credentials stored securely in system keychain; never sent to servers without explicit consent
- Email sync performed locally; mail data not transferred off computer unless user-configured transmissions enabled
- SSL or other encryption technologies used for sensitive form data
- Security vulnerability disclosure program with contact at security@foundry376.com
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