Software Alternatives, Accelerators & Startups

Airmail VS ForthWrite

Compare Airmail VS ForthWrite and see what are their differences

Airmail logo Airmail

Airmail is a lightweight and lightning fast mail client for Mac.

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.
Visit Website
  • Airmail Landing page
    Landing page //
    2021-10-16
  • 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.

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

Airmail features and specs

  • Customizable Interface
    Airmail allows extensive customization of its interface, providing users the ability to tailor their email experience to fit their specific workflow and preferences.
  • Integration with Other Apps
    Airmail offers seamless integration with various productivity and cloud services such as Google Drive, Dropbox, and several task management apps.
  • Unified Inbox
    It supports multiple email accounts and consolidates them into a unified inbox, simplifying email management for users with several email addresses.
  • Advanced Filtering and Search
    The application features robust filtering and search capabilities, making it easier for users to find specific emails and to manage inbox clutter.
  • Snooze and Delayed Send
    Airmail includes useful features like snoozing emails for later and scheduling email sends, enhancing the user's ability to manage their time and tasks efficiently.

Possible disadvantages of Airmail

  • Cost
    Airmail is a paid application, which can be a downside for users looking for a free email client.
  • Resource Intensive
    The application can be resource-intensive, potentially affecting performance on older or less powerful devices.
  • Learning Curve
    Due to its vast array of features and customization options, new users might find Airmail somewhat complex and challenging to learn initially.
  • Notification Issues
    Some users have reported inconsistencies with the notification system, such as missed or delayed notifications.
  • Occasional Bugs
    Like any software, Airmail has its share of bugs and glitches, which can occasionally disrupt the user experience.

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

Analysis of Airmail

Overall verdict

  • Airmail is generally considered a good email application for users seeking a high level of customization and integration capabilities. Its rich set of features and intuitive design make it a strong option for power users and those who manage multiple email accounts.

Why this product is good

  • Airmail is often praised for its user-friendly interface, extensive customization options, and seamless integration with various third-party applications. It supports multiple email accounts and provides features such as smart folders, quick reply, and efficient email organization tools. Additionally, users appreciate its performance and the ability to tailor notifications and appearance to fit their specific needs.

Recommended for

  • Users who manage multiple email accounts
  • Individuals seeking extensive customization options
  • Professionals requiring integration with productivity tools
  • People looking for a clean and efficient user interface

Analysis of ForthWrite

Overall verdict

  • I don't have verified information about a product called ForthWrite (forthwrite.ai). I cannot confirm its features, quality, or reputation, so I'm unable to provide an accurate assessment of whether it's good.

Why this product is good

  • No reliable data available on this specific product in my knowledge base
  • This may be a newer product, a niche tool, or possibly a fictional/hypothetical name
  • Providing details without verified information could result in inaccurate or fabricated claims

Recommended for

  • Unable to determine without verified product information
  • Consider checking the official website, user reviews on platforms like G2 or Trustpilot, and independent tech review sites for accurate details

Airmail videos

Airmail App for iOS (iPhone) - review

More videos:

  • Review - App Review: Airmail

ForthWrite videos

No ForthWrite videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to Airmail and ForthWrite)
Email
96 96%
4% 4
Email Clients
100 100%
0% 0
Email Productivity
0 0%
100% 100
Calendar
100 100%
0% 0

Questions & Answers

As answered by people managing Airmail and ForthWrite.

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

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.

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.

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.

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.

User comments

Share your experience with using Airmail and ForthWrite. For example, how are they different and which one is better?
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Reviews

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

Airmail Reviews

10 Alternatives to Thunderbird Reddit โ€“ Ease Your Email Life!
A great Mac email client is Airmail. This is an all around good product, even though Airmail Pro and Airmail for business purposes require a subscription.
Source: droidpile.com
11 Best Thunderbird Alternatives That Make Email Easier
Airmail is one of the best email clients for Mac. All the way good to use as the general features are free to be used while Airmail Pro and Airmail for business purposes are chargeable.
10 Alternatives to Mozilla Thunderbird
Airmail is available for Mac and iOS. The basic features are free, while Airmail Pro costs $2.99/month or $9.99/year. Airmail for Business costs $49.99 as a one-time purchase.

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)

Social recommendations and mentions

Based on our record, Airmail seems to be more popular. It has been mentiond 8 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.

Airmail mentions (8)

  • Is there a way to have Shortcuts search my email subjects for a specific word, and if it finds that word, copy the body of the email into a new Note?
    The airmail app https://airmailapp.com has a shortcut action that allows you to search emails and returns things, not used it myself but you could try that. Source: over 3 years ago
  • Best calendar/mail app?
    I once trusted AirMail, but they created so many extra folders and kept switching around the client interface. It haunts me to this day, since I recommended it to so many people who hated it. Source: over 3 years ago
  • Mail app suggestions iOS/MacOS
    You might want to consider Airmail Pro or Business as an alternative. I think it has all the features you are looking for. They offer a privacymode and some privacy features but I don't have any experiences with this app or company. Good luck! Source: over 4 years ago
  • Is there a mail client or iOS that can reliable search *all* mail?
    I am using Airmail and I always find what I search for. On Mac, iPad and iPhone. Https://airmailapp.com. Source: over 4 years ago
  • What does mute do?
    Also, I don't think Airmail responds on here much, but I've found if you click the chat icon at the bottom right of this page, they're pretty good about responding by email. You can also check with their Slack page if you use their beta app, which BTW, is free. https://airmailapp.com/. Source: over 4 years ago
View more

ForthWrite mentions (0)

We have not tracked any mentions of ForthWrite yet. Tracking of ForthWrite recommendations started around Jun 2026.

What are some alternatives?

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

Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!

ReclaimAI - Helps users prioritize their work and personal calendars

Mailbird - Mailbird is the best email client for Windows 7, 8 and 10

Superhuman - Superhuman is an email management tool.

Mailspring - Mailspring is a mail client for Mac, Windows and Linux.

Shortwave - Email smarter & faster with a reinvented experience for your Gmail