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The best open source alternative to Macro Mail is Inbox Zero. If that doesn't suit you, we've compiled a ranked list of other open source Macro Mail alternatives to help you find a suitable replacement. Other interesting open source alternative to Macro Mail is Twake Mail.
Macro Mail alternatives are mainly Email Clients but may also be AI Personal Assistants. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Macro Mail.
Automates Gmail and Outlook with AI-drafted replies, bulk unsubscribe, cold email blocking, attachment filing, and inbox analytics for individuals and teams.

Inbox Zero sits on top of your existing Gmail or Outlook account and handles the parts of email management that eat your day. It's not a replacement for your email client. It works alongside it, adding AI automation, smart categorization, and bulk cleanup tools that your email provider doesn't offer.
The core idea: when you open your inbox, the work is already done. Emails are sorted into categories like Newsletter, Urgent, Cold Email, and To Reply. Anything needing a response has a pre-drafted reply written in your voice, based on your email history, calendar availability, and connected CRM data. You review, adjust if needed, and send.
Key capabilities:
It connects to Gmail, Google Workspace, and Microsoft Outlook. Self-hosting is available for anyone who wants full control over their data. The codebase is open source, SOC 2 Type 2 certified, and doesn't use your emails to train AI models.
Inbox Zero suits busy professionals, executives, and small teams handling high email volume. If you've looked at Fyxer or similar AI email tools and wanted something self-hostable with deeper automation, this covers that ground. Paid plans start at $18/user/month with a 7-day free trial and no credit card required.
Open source professional email solution with PGP encryption, JMAP protocol, AI-powered responses, and advanced antispam protection. Control your data privately.

Twake Mail is a next-generation open source email solution that prioritizes security, privacy, and performance for professional use. Built on the cutting-edge JMAP protocol, it delivers 30 times better efficiency than traditional IMAP systems while providing enterprise-grade security features.
Key Security Features:
Modern Technology Stack:
Enterprise Benefits:
Advanced Search & Organization:
Developed by LINAGORA, a leader in European open source with 24 years of experience, Twake Mail is backed by active participation in IETF standardization and Apache Foundation projects. The solution offers complete transparency with code available on GitHub for review and contribution.
Modern auth infrastructure for developers. Add multi-tenancy, enterprise SSO, and RBAC to your SaaS or AI apps.
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