Write better emails in seconds — right inside Gmail and Outlook
Letterbot AI works directly in your inbox. No copy-pasting, no switching tabs.
6 tools to handle every email task
Everything you need, right inside your inbox — no new app to learn.
Write emails from scratch
Describe what you need in a few words, get a full, polished email in seconds.
Reply intelligently
Paste a received email, get a well-crafted reply ready to send.
Generate subject lines
Get 3 high-converting subject line options instantly.
Summarise long emails
Turn a wall of text into a clear bullet-point summary.
Fix grammar & spelling
Clean up any draft before hitting send.
Write sales emails
Create persuasive cold outreach for any product or service.
Supports 13 languages — English, German, Spanish, French, Portuguese, Japanese, Korean, Chinese, Arabic, Hindi, Russian, Croatian, and more.
No new app to learn. Works right inside Gmail and Outlook.
Install the extension once and Letterbot appears as a panel inside your inbox. Write, reply, summarise, and fix emails without ever leaving your browser.
Spend time on what really matters 😇
Speed up annoying writing chores and focus on creative tasks instead!
What our users say ⭐
Rated 4.8 / 5 on the Chrome Web Store
"This is an absolute lifesaver! I love how quickly it formulates emails from just a couple of bullet points. Saves me so much time every single day."
"The subject line generator alone is worth it. I used to spend 10 minutes tweaking subject lines — now I get 3 great options in seconds and just pick the best one."
"The summarisation feature is fantastic. I manage a high-volume inbox and no longer have to read through walls of text — Letterbot gives me the key points instantly."
Letterbot AI in numbers
Active Users
Emails generated
Chrome Web Store rating
