Shortwave costs $15/mo.
These cost $0.
3 free alternatives to Shortwave, checked for license, recent activity and real adoption. Each one tells you the catch, so you can switch with your eyes open.
The top-rated free, open-source replacement for Shortwave is Macro Mail (Open Source Open Source). Switching a 5-person team saves up to $900/year compared to Shortwave's $15/mo subscription.
The catch: Community-driven open source project without dedicated enterprise SLAs.
Shortwave vs Free Alternatives
Quick side-by-side comparison · $0/mo vs $15/mo
| Alternative | Type | License | Where It Runs | Stars | Head-to-Head |
|---|---|---|---|---|---|
| Macro Mail | open source | Open Source | Local | ★ 6.2k | Shortwave vs Macro Mail → |
| Inbox Zero | open source | Open Source | Local | ★ 12.9k | Shortwave vs Inbox Zero → |
| Twake Mail | open source | Open Source | Local | ★ 666 | Shortwave vs Twake Mail → |
The picks
3 open source · ranked by fit
- 01
Macro Mail
open sourceOpen SourceLocal6.2knov 2026An AI-powered email client that combines inbox management, chat, tasks, and AI agents in one shared workspace, built for keyboard-driven workflows.
The catch vs ShortwaveCommunity-driven open source project without dedicated enterprise SLAs.
Install, platforms & data +
- platforms
- desktopcross-platformone-click install
- install
- Clone https://github.com/macro-inc/macro or deploy with Docker Compose
- setup
- Download the native package or installer for your operating system.
- your data
- All application data lives locally on your own machine.
- checked
- 2026-11-07
- 02
Inbox Zero
open sourceOpen SourceLocal12.9knov 2026Automates Gmail and Outlook with AI-drafted replies, bulk unsubscribe, cold email blocking, attachment filing, and inbox analytics for individuals and teams.
The catch vs ShortwaveCommunity-driven open source project without dedicated enterprise SLAs.
Install, platforms & data +
- platforms
- desktopcross-platformone-click install
- install
- Clone https://github.com/elie222/inbox-zero or deploy with Docker Compose
- setup
- Download the native package or installer for your operating system.
- your data
- All application data lives locally on your own machine.
- checked
- 2026-11-07
- 03
Twake Mail
open sourceOpen SourceLocal666nov 2026Open source professional email solution with PGP encryption, JMAP protocol, AI-powered responses, and advanced antispam protection. Control your data privately.
The catch vs ShortwaveCommunity-driven open source project without dedicated enterprise SLAs.
Install, platforms & data +
- platforms
- desktopcross-platformone-click install
- install
- Clone https://github.com/linagora/tmail-flutter or deploy with Docker Compose
- setup
- Download the native package or installer for your operating system.
- your data
- All application data lives locally on your own machine.
- checked
- 2026-11-07
Shortwave Head-to-Head Comparisons (2027)
Side-by-side trade-off breakdowns · 3 free alternatives
Frequently Asked Questions
Direct answers · Shortwave open-source replacements
What is the best free alternative to Shortwave?+
The top free alternative to Shortwave is Macro Mail (open source, Open Source). An AI-powered email client that combines inbox management, chat, tasks, and AI agents in one shared workspace, built for keyboard-driven workflows. Other popular Shortwave replacements include Inbox Zero, Twake Mail.
How much does switching from Shortwave to a free alternative save?+
Shortwave starts at $15/month per seat ($180/year). Switching a 5-person team to a free alternative like Macro Mail saves $900 per year in software subscription fees.
Should I vibe-code or build my own Shortwave clone from scratch?+
Our build verdict for Shortwave is NO (use a free alternative, save the tokens). Instead of paying recurring SaaS fees for Shortwave or rebuilding it from scratch, deploy one of the 3 battle-tested open-source alternatives like Macro Mail.
What is the catch when switching from Shortwave to Macro Mail?+
Community-driven open source project without dedicated enterprise SLAs.
