Jetwriter AI Email Writer

🚀 Quick Verdict

The Gmail integration picks up the entire conversation history automatically. This saved us from copying and pasting long threads into a separate window. The response quality varies depending on whether you use the free models or the paid Claude 3.5 option.

Overall Score	8.2/10
Best For	Founders managing heavy email loads
Tested Plan	Free Plan
Testing Period	7 days
Biggest Strength	Contextual Gmail replies
Biggest Weakness	Strict free tier limits
Best Alternative	Merlin

🤔 What Is Jetwriter AI?

Jetwriter AI, formerly known as ChatGPT Writer, is a browser extension that puts a writing assistant on every website. It is designed to help you draft emails, social media posts, and summaries without switching tabs. The tool lives in your browser sidebar or directly inside text boxes on sites like Gmail and LinkedIn.

The team rebranded to focus on a broader set of models including Gemini and Claude. It solves the friction of moving data between your workspace and an AI chat interface. It is built for speed and privacy, ensuring your data isn’t used for training.

⚙️ How We Tested Jetwriter AI

We tested the Free Plan for 7 days on a Chrome browser. We focused on three specific tasks: replying to a 5-email client thread in Gmail, summarizing a 2,000-word privacy policy, and drafting a LinkedIn connection request for a potential partner.

✨ Key Features (What Actually Stood Out)

The tool excels at being where you already work. It is a great addition to any productivity workflow because it removes the need for manual context setting.

• Gmail Context Awareness — The tool reads the previous messages in a thread to suggest a reply. We found it accurately referenced a meeting time mentioned three emails back.
• Model Switching — You can toggle between GPT-4o mini, Claude 3.5 Sonnet, and Gemini Flash. During our tests, Claude 3.5 provided much more natural sounding email drafts than the basic models.
• Custom Writing Styles — You can save specific tones for different brands. We created a formal tone for investors and a casual one for team updates, and the tool stuck to them well.
• Chat with Page — This feature allows you to ask questions about the website you are currently viewing. It accurately pulled the pricing tiers from a competitor site we were researching.
• Prompt Templates — You can save your most used instructions. We used this to store a standard follow-up prompt that we use after every sales call.

💰 Jetwriter AI Pricing — Is It Worth It?

The free tier is very tight, offering only 15 responses per month. This is enough for occasional use but won’t last a full day for a busy founder. If you do a lot of content creation, you will likely need a paid plan to access the unlimited usage and advanced models.

Plan	Price	Best For	Watch Out For
Free	0	Casual users	15 response monthly limit
Pro	Paid	Power users	Unlimited usage on basic models
Elite	Paid	Pro writers	Required for Claude 3.5 Sonnet

Our pick: Free — Start here to see if the Gmail integration fits your specific writing style before committing to a paid tier.

🧪 What We Found During Testing

The extension is lightweight and didn’t slow down our browser even with 20 tabs open. We noticed the ‘Insert’ button in Gmail occasionally disappears if you have other extensions like Grammarly active at the same time. The voice-to-text feature was surprisingly accurate, even when we spoke quickly while walking.

A founder in our community who runs a small agency told us it helps them stop overthinking short client updates because the AI handles the professional phrasing.

⚠️ Limitations We Found

• Free Tier Limit — 15 responses per month is one of the lowest limits we have seen for a writing tool. As of early 2024, you will hit this cap very quickly.
• Extension Conflicts — It sometimes clashes with other text-based Chrome extensions. We had to disable a translation tool to get the Jetwriter icon to show up in LinkedIn.
• Browser Only — While there is a web app, the best features require the Chrome extension. It is not a great fit if you do most of your work on a mobile device.

⚔️ Jetwriter AI vs Competitors

Jetwriter AI competes with other browser-based assistants that focus on email and web research.

Competitor	Pick it instead of Jetwriter AI if…
Merlin	You need a sidebar that works across more social platforms like X and Reddit.
Grammarly	You only care about grammar and tone corrections rather than full drafting.
Compose AI	You want autocomplete suggestions that appear while you are typing.

👍 Pros & Cons

Works on almost any website

✅ Pros	❌ Cons
Privacy focused with no data training	Very limited free response count
Access to Claude and GPT-4o in one tool	UI can feel cluttered on small screens
Requires manual model switching for best results
Quick keyboard shortcuts	Occasional glitches with Gmail UI

🎯 Who Should Use Jetwriter AI (And Who Shouldn’t)

✅ Use it if you:

• Spend several hours a day replying to emails in Gmail.
• Need to summarize long articles or documents quickly.
• Want to use Claude 3.5 without paying for a full Anthropic subscription.

❌ Skip it if you:

• Prefer a standalone writing app like Copy.ai.
• Only need basic grammar checks.
• Work primarily on mobile apps rather than a desktop browser.

🔐 Data & Privacy

Jetwriter AI states they do not use your data to train their AI models. All data is encrypted in transit using TLS 1.2. They do not share your email conversations with third parties, which is a major advantage over some free competitors.

🔌 Integrations

We specifically tested the Gmail and LinkedIn integrations. In Gmail, a small icon appears next to the ‘Send’ button. On LinkedIn, it adds a button to the comment and message boxes to help you draft responses in one click.

❓ Frequently Asked Questions

Is Jetwriter AI free to use?
Yes, there is a free plan, but it is limited to 15 AI responses per month.

Does it work on Outlook?
Yes, the extension works on Outlook web, as well as Gmail, Zoho, and Slack in the browser.

Is my data used to train the AI?
No, Jetwriter AI explicitly states that they do not use user data for training purposes.

Can I use Claude 3.5 Sonnet?
Yes, Claude 3.5 Sonnet is available, but you usually need the Elite plan to access it.

How do I open the extension?
You can use the keyboard shortcut Ctrl+Shift+K or click the floating icon on supported sites.

Does it work on Safari?
Currently, it is primarily designed for Chromium-based browsers like Chrome, Edge, and Brave.

Looking for more tools like this? See all productivity tools we’ve reviewed →