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ForthWrite
Superhuman
Gemini
Lavender
Mailmeteor
Spark Mail
ForthWrite is an AI email writing assistant for Gmail and Outlook that learns your writing style from your real sent mail. The more you use it, the more it sounds like you. Get smart drafts in seconds, auto-draft replies before you open your inbox, and maintain your personal voice at scale. Free to start, no credit card required. Works inside Gmail and Outlook on the web.
How it works
ForthWrite captures your tone, sentence rhythm, and sign-offs from your actual sent emails, then uses that profile to generate drafts that match how you write, not a generic AI voice. Every draft you edit or send improves the model over time.
Key features
Who uses it
Professionals who send high volumes of relationship-critical email: lawyers, financial advisors, recruiters, account executives, founders, and anyone who wants their inbox handled without sounding like a chatbot wrote it.
Pricing
Free tier includes 10 drafts per week with no credit card required. Paid plans start at $12/month and include unlimited drafts, custom persona prompts, and auto-draft.
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ForthWrite's answer:
Next.js, React, Supabase, Anthropic Claude, OpenAI, Stripe, Vercel, Chrome Extensions API
ForthWrite's answer:
ForthWrite learns your writing style from your actual sent mail, not a generic prompt. Every draft sounds like you wrote it because it was trained on how you actually write. It also auto-drafts replies before you open your inbox, so your email is partially handled before your day starts.
ForthWrite's answer:
Most AI email tools give you a blank box and a "write for me" button. ForthWrite builds a voice profile from your sent history and gets more accurate with every draft you edit or send. Unlike ChatGPT or Gemini, it works natively inside Gmail and Outlook with no copy-paste. Unlike Lavender, it writes the draft, not just scores it.
ForthWrite's answer:
Professionals who send high volumes of relationship-critical email and cannot afford to sound generic: lawyers, financial advisors, recruiters, account executives, consultants, and founders managing their own inbox.
ForthWrite's answer:
Built out of frustration with AI writing tools that produce text that sounds nothing like the person sending it, and as a way to handle large amounts of daily email. The core insight was that your sent mail is the best training data you already have, and no tool was using it.
Grammarly is top especially with content editing and Google doc integration features.
Grammarly is a fantastic tool that helps users step up their writing game by providing real-time grammar, spelling, and punctuation corrections. It is designed to help you create polished, professional content and ensure your message is clear and concise. Whether you're a student, professional, or just someone who wants to improve their writing skills, Grammarly has got your back.
Grammarly is the most useful to me for its Google Docs feature that supports me as I create new content. Unfortunately, they seem to provide more context and insights when I am sending an email rather than writing an entire document.
I built ForthWrite because I kept sending emails that sounded like they came from the same generic AI as everyone else. After launching it, I still use it for my own inbox every day, which is about the most honest endorsement I can give.
The Chrome extension lives inside Gmail and Outlook on the web. Open a thread, hit Alt+Shift+D, and a draft comes back in your voice, not a template. The free tier is real: 10 drafts per week, no API key, no credit card. Voice matching is included on free, because that is the point.
What keeps it useful compared to Gemini or a chat tab: it learns from what you actually send. Every edit you make before hitting send becomes a signal. Over time the drafts drift closer to how you really write, and the dashboard shows the improvement curve so you can see it happening.
The web compose surface lets you draft from forthwrite.ai without installing anything, useful for people who want to try before committing to the extension.
Standard adds recipient-aware and intent-aware drafting plus AI coaching. Pro adds auto-draft (replies waiting when you open Gmail), batch replies, and Prompt Lab for version-controlling your prompts. Teams adds a shared persona and seat-level analytics.
ForthWrite is not for everyone. If you just need quick replies and tone does not matter, Gemini is free and already in your inbox. ForthWrite is for people where tone does matter: client communication, relationship-driven threads, external correspondence where sounding off costs something real.
Disclosure: I am the founder and use it daily. Happy to answer questions in the comments.
Based on our record, Grammarly seems to be more popular. It has been mentiond 85 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Grammarly Grammarly.com Free writing assistant to enhance clarity and grammar in UI text. - Source: dev.to / over 1 year ago
Use Grammarly, the app or the extension. Source: almost 3 years ago
Grammarly - An online writing tool that helps users improve their writing skills and beat writerโs block. I use it everydayโฆ. Source: about 3 years ago
I asked the question. Response text generated by ChatGPT and corrected by Grammarly.com. Source: about 3 years ago
I did not have anyone read over my essays. I regret that now, knowing that my application would have cried out for joy if only there were a reader other than grammarly.com and my drowsy midnight self. I also wrote my essay a day before the Questbridge deadline (I think the deadline was Sept 27th?), which is a terrible, TERRIBLE idea. Please do not do things last minute :D. Source: about 3 years ago
QuillBot - Quillbot is a free paraphrasing tool that will rewrite any sentence or paraphraph you give it. The article rewriter can rewrite essays or articles and is excellent as a grammar and fluency corrector.
Superhuman - Superhuman is an email management tool.
ProWritingAid - For the smarter writer. A grammar checker, style editor, and writing mentor in one package.
Gemini - Gemini, formerly known as Bard, is a generative artificial intelligence chatbot developed by Google. Based on the large language model (LLM) of the same name, it was launched in 2023 in response to the rise of OpenAI's ChatGPT.
LanguageTool - Free proofreading tool for OpenOffice, LibreOffice, Firefox, and Chrome.
Lavender - Realtime coaching for sales emails.
