Software Alternatives, Accelerators & Startups

ForthWrite VS Mailrith

Compare ForthWrite VS Mailrith and see what are their differences

ForthWrite logo ForthWrite

Email that sounds like you, and gets measurably more like you every week. Drafts in Gmail, Outlook, and the browser. Free to start.
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Mailrith logo Mailrith

Grow Your List, Not Your Email Marketing Bill
  • ForthWrite Landing Page
    Landing Page //
    2026-06-19
  • ForthWrite Dashboard
    Dashboard //
    2026-06-19
  • ForthWrite In Gmail
    In Gmail //
    2026-06-19
  • ForthWrite Pricing
    Pricing //
    2026-06-19

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

  • Auto-draft: replies waiting in Gmail before you open your inbox
  • Voice matching from your real sent mail, not templates
  • Recipient-aware drafts that adapt to who you are emailing
  • Prompt Lab for version-controlling and A/B testing your persona prompt
  • BYOK support: bring your own API key for Claude, OpenAI, Grok, Mistral, and more
  • Works in Gmail and Outlook on the web, plus a standalone browser widget
  • Training data export and full data portability

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 Mailrith Dashboard
    Mailrith Dashboard //
    2026-07-06
  • Mailrith Mailrith Form Builder
    Mailrith Form Builder //
    2026-07-06
  • Mailrith Mailrith Landing Page Builder
    Mailrith Landing Page Builder //
    2026-07-06
  • Mailrith Mailrith Email Sequence Builder
    Mailrith Email Sequence Builder //
    2026-07-06
  • Mailrith Mailrith Automations
    Mailrith Automations //
    2026-07-06
  • Mailrith Mailrith AI Connections
    Mailrith AI Connections //
    2026-07-06
  • Mailrith Mailrith Email Delivery Providers
    Mailrith Email Delivery Providers //
    2026-07-06

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

$ Details
freemium $12.0 / Monthly (Standard plan)
Platforms
Web
Release Date
2026 June
Startup details
Country
United States
State
California
City
San Diego
Founder(s)
Curtis Boortz
Employees
1 - 9

Mailrith

$ Details
paid Free Trial $29.0 / Monthly (Solo, Unlimited Subscribers, Unlimited Emails)
Platforms
SaaS
Release Date
2026 May
Startup details
Country
India
State
Telangana
City
Hyderabad
Founder(s)
Abhijit Rawool, Sarthak Rawool
Employees
1 - 9

ForthWrite features and specs

  • Voice Matching
    Learns from your real sent mail, not templates
  • Auto-draft replies
    Replies waiting in Gmail before you open your inbox
  • Batch-drafting
    Draft replies for your entire inbox with one click
  • Works in browser
    Gmail, Outlook, and web browsers
  • BYOK support
    Claude, OpenAI, Grok, Mistral, and more
  • Prompt Lab
    Version control and A/B test your persona prompt
  • Free tier
    10 drafts per week, no credit card required

Mailrith features and specs

  • Subscribers
    Unlimited
  • Email
    Unlimited
  • Workspaces
    Multiple
  • Team Members
    Multiple
  • Automation Builder
    Available
  • Email Sequences
    Unlimited
  • Landing Pages
    Unlimited
  • Forms
    Unlimited
  • Write With AI
    Available
  • Magic Links
    Unlimited
  • Analytics and Reporting
    Detailed
  • Tags
    Unlimited
  • Segments
    Unlimited
  • Email Broadcasts
    Unlimited
  • Email Templates
    Unlimited

Category Popularity

0-100% (relative to ForthWrite and Mailrith)
Email
100 100%
0% 0
Email Marketing
0 0%
100% 100
Email Productivity
100 100%
0% 0
Email Newsletters
0 0%
100% 100

Questions & Answers

As answered by people managing ForthWrite and Mailrith.

Which are the primary technologies used for building your product?

ForthWrite'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.

What makes your product unique?

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.

Why should a person choose your product over its competitors?

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.

How would you describe the primary audience of your product?

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.

What's the story behind your product?

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.

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare ForthWrite and Mailrith

ForthWrite Reviews

  1. curtisboortz
    ยท Founder at ForthWrite ยท
    I built ForthWrite to fix generic AI email, and I still use it every day

    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.

    ๐Ÿ Competitors: Jace.ai, Fyxer, Mailmeteor
    ๐Ÿ‘ Pros:    Drafts land inside gmail and outlook; no copy-pasting from a chat window|Voice matching is on the free tier, not paywalled behind paid plans|No api key, no credit card to start; free tier runs on a server-side proxy|Learns from every edit you make before sending; drafts improve over time|Full keyboard flow: alt+shift+d to draft in any thread, no mouse required|Byok on paid plans, 9 providers supported, keys encrypted at rest|Web compose at forthwrite.ai works without installing the extension at all
    ๐Ÿ‘Ž Cons:    10 free drafts/week is enough to evaluate, not enough for a heavy inbox|Auto-draft, batch replies, and prompt lab all require the pro tier|Early-stage product; fewer third-party integrations than mature inbox tools|No mobile app: the extension and add-in are desktop-only (chrome on web, or the outlook desktop add-in)

Mailrith Reviews

We have no reviews of Mailrith yet.
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What are some alternatives?

When comparing ForthWrite and Mailrith, you can also consider the following products

Superhuman - Superhuman is an email management tool.

MailChimp - MailChimp is the best way to design, send, and share email newsletters.

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.

Kit - Discover and buy the products experts swear by.

Lavender - Realtime coaching for sales emails.

ActiveCampaign - Integrated email marketing, marketing automation, and small business CRM. Send beautiful newsletters, setup behavioral based automations, and benefit from sales automation.