MailGPT - ChatGPT and Claude for Gmail
Get the power of both ChatGPT and Claude AI models in your Email inbox
As of June 2026, MailGPT - ChatGPT and Claude for Gmail has 145 users and a 5.00/5 rating from 2 reviews in the Productivity category.
Usersup 83.5 percent+83.5%
145
145
Ratingno change0%
5.00
2 reviews
Reviewsno change0%
2
Version
1.0
Manifest V3
History
3 snapshotsTracking since Apr 23, 2026.
View as table
| Date | Users | Rating | Reviews | Version |
|---|---|---|---|---|
| Apr 23, 2026 | 79 | 5.00 | 2 | 1.0 |
| May 12, 2026 | 117 | 5.00 | 2 | 1.0 |
| Jun 7, 2026 | 125 | 5.00 | 2 | 1.0 |
| Now | 145 | 5.00 | 2 | 1.0 |
Permissions & access
- Permissions
- storage
- Host access
- None declared
Screenshots
About
Use both ChatGPT and Claude AI in your Gmail inbox, brought to you by Pier20.ai (https://pier20.ai/). MailGPT brings professional-grade AI writing assistance directly to your inbox, helping you craft perfect emails in seconds. **Features** 1. Transform rough outlines into polished, professional emails instantly 2. Convert meeting notes into clear, actionable emails with one click 3. Add wit and personality to your messages effortlessly 4. Simplify complex emails to improve readability and response rates 5. Create custom writing styles with personalized AI instructions Stop spending hours crafting emails - let MailGPT help you communicate more effectively and get faster responses. Getting started is simple: Just install the extension, create a free Pier20 account, and start writing better emails immediately. No separate ChatGPT, OpenAI, Claude, or Anthropic accounts needed! ** FAQs** Q: What are ChatGPT and Claude? A: ChatGPT (by OpenAI) and Claude (by Anthropic) are advanced AI language models trained on vast amounts of human knowledge. They excel at understanding context, processing information, and generating human-like text for various purposes, including email writing. Q: What is MailGPT? A: MailGPT is a free Chrome extension by Pier20.ai that brings powerful AI writing assistance directly to your Gmail inbox. It helps you write more effective emails faster, leading to better response rates. Q: Is MailGPT free? A: Yes, the extension is completely free to use. Q: Do I need an account? A: You'll need a free Pier20.ai account to use the extension. Simply visit https://app.pier20.ai/ to get started. Q: Is this an official OpenAI or Anthropic product? A: No, MailGPT was developed by the Pier20.ai team. Originally built for internal use, we've made it publicly available to help everyone write better emails.
Technical
- Version
- 1.0
- Manifest
- V3
- Size
- 480KiB
- Min Chrome
- 88
- Languages
- 1
- Featured
- No
Metadata
- ID
- hmnjajhigjcfklcfabkjceimbeofamje
- Developer ID
- ue36cbcf7c4a6503e886f3a9bc3a8d327
- Developer Email
- [email protected]
- Created
- Dec 11, 2024
- Last Updated (Store)
- Dec 18, 2024
- Last Scraped
- Jun 7, 2026
- Website
- pier20.ai
- Support URL
- —
- Privacy Policy
- https://pier20.ai/legal/privacy-policy
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Data sourced from the Chrome Web Store · last verified Jun 7, 2026.