Shortwave

An email app for Gmail with an AI assistant that searches your old mail and writes replies in your style, learned from what you've sent.

Beginner-friendlyProductivityFree trial

Visit Shortwave ↗

Our take

Beginner-friendly · 14-day free trial, then $30/month

Shortwave reads the emails you've sent and writes replies in that style. Its pricing page says the AI runs on Anthropic's Claude Sonnet 4.6. It costs $30 a month and only works with Gmail.

Also look at Grammarly and Superhuman Mail.

The quick breakdown

Good for: Gmail users who answer 20+ emails a day and want replies that sound like them.
Not great for: Outlook users, or anyone sending a few emails a week.
Watch out: $30 a month after the 14-day trial, and the Business plan caps AI use at roughly 150 to 300 requests a day.
What people say: On r/zapier, a heavy user called it more customizable than Superhuman, but Gmail only.

Based on Shortwave pricing, r/zapier: What AI email app are you using?. Checked Oct 15, 2026. Prices change, so confirm before you pay.

Good for

Write and sort emails

Quick facts

Price: Free trial (14-day free trial, then $30/month).
Works on: Web, Mac / PC app, iPhone & iPad, Android. You get: text.
Last checked: Oct 15, 2026.
What it is: Shortwave is a productivity tool. An email app for Gmail with an AI assistant that searches your old mail and writes replies in your style, learned from what you've sent.
Where it was found: Added by ShipRadar editors as a well-known tool in Productivity.
Tags: Free trial.
Traction: Editor's pick.
Official link: www.shortwave.com

Common questions

What is Shortwave good for?

Gmail users who answer 20+ emails a day and want replies that sound like them. It's not the best pick for: outlook users, or anyone sending a few emails a week.