kitio.aiAdded Nov 5, 2026
Letterbot
FreemiumGmail add-on that turns rough notes into finished emails
What is Letterbot?
Letterbot is an AI email writer that adds a button to Gmail's compose and reply windows and turns quick notes into clear messages. It also works with any other email client through a web app, and suits people who write a lot of routine email.
Tools cover writing a new email, drafting a reply, suggesting a subject line, summarizing a thread, fixing grammar and writing sales emails. You choose one of nine tones and one of 13 languages, press Generate, then insert the draft and edit it. A keyboard shortcut opens the panel without the mouse.
Nothing is sent to the AI until you click a tool. It installs from the Chrome Web Store, and desktop web apps exist for Windows and Mac. The project is built by a single developer in Germany, and paid plans are priced in euros and raise the daily request limit.
Features
- Notes to email
- Reply generation
- Thread summaries
- Grammar fix
- 9 tones and 13 languages
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Releases
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Organization
Letterbot
🇩🇪 Germany
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Freemium
- Paid options from
- Not listed
Letterbot plans
Free
Free
- 5 requests a day
- Write, reply, subject and summary
Basic
€3.99/mo
- 100 requests a day
- All 6 writing tools
- Grammar fix and sales writer
Professional
€19.99/mo
- 800 requests a day
- Priority AI processing
Prices in USD, checked Nov 5, 2026. Plans change often, so confirm on the Letterbot site.Official pricing
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Pros and cons
Pros
- Works directly inside Gmail
- Very low-cost paid plan
- Only runs when you click a tool
Cons
- Free plan allows 5 requests a day
- Prices only listed in euros
- Native integration limited to Gmail
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Q&A
What is Letterbot?
Letterbot is an AI email writer that adds a button to Gmail's compose and reply windows and turns quick notes into clear messages. It also works with any other email client through a web app, and suits people who write a lot of routine email.
Does Letterbot work outside Gmail?
Yes. Other email apps are supported through the Letterbot web app, which you can install on Windows or Mac.
Which languages can Letterbot write in?
It writes and replies in 13 languages, with nine tones of voice to choose from.
How much does Letterbot cost?
Letterbot is freemium.
Is there a free version of Letterbot?
Yes. Letterbot has a free plan, and paid plans add more usage and features.
What are the main features of Letterbot?
Notes to email, Reply generation, Thread summaries, Grammar fix, 9 tones and 13 languages.
Who makes Letterbot?
Letterbot is made by Letterbot.
What are the best alternatives to Letterbot?
Popular alternatives include Respondable, superReply, Scribbly.