ForthWrite
Superhuman
Gemini
Lavender
Mailmeteor
Spark Mail
Mailrith
MailChimp
Kit
ActiveCampaign
MailerLite
Drip
AWeber
Sendy
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.
Mailrith is an email marketing automation platform without subscriber-based pricing. Connect Amazon SES, SendGrid, Postmark, and other email delivery services to send your emails.
ForthWrite
MailrithForthWrite's answer
Next.js, React, Supabase, Anthropic Claude, OpenAI, Stripe, Vercel, Chrome Extensions API
Mailrith's answer:
Mailrith is built with TypeScript, React, and Vite, while the marketing and docs site use Astro.
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.
Mailrith's answer:
Mailrith gives you email marketing software where your cost does not rise just because your list grows. You can bring your own email sending provider, manage unlimited Subscribers, and run forms, landing pages, broadcasts, sequences, automations, tags, segments, and templates from one workspace.
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.
Mailrith's answer:
Choose Mailrith if you want more control over your email marketing costs and sending setup. Many tools charge more as your Subscriber list grows. Mailrith is built for people who want predictable pricing, their own SMTP or delivery provider, and the core tools needed to grow, organize, and email their list without juggling several separate products.
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.
Mailrith's answer:
Mailrith is mainly for startups, creators, newsletter operators, small businesses, and agencies that want to grow an email list without worrying that each new Subscriber will increase the software bill. It is also a strong fit for teams that want control over email delivery through providers like Amazon SES, Postmark, SendGrid, Mailgun, Resend, Brevo, or custom SMTP.
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.
Mailrith's answer:
Mailrith was built because email marketing pricing often punishes growth. As lists get larger, many businesses start trimming Subscribers, delaying imports, or avoiding campaigns because they are worried about moving into a higher pricing tier. Mailrith was created to make email marketing feel fairer: bring your own sending provider, keep your Subscriber list with you, and pay for the software without being penalized for growing.
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.
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