Software Alternatives, Accelerators & Startups

FollowUpThen VS ForthWrite

Compare FollowUpThen VS ForthWrite and see what are their differences

FollowUpThen logo FollowUpThen

The simplest way to schedule an email reminder

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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  • FollowUpThen Landing page
    Landing page //
    2023-07-27
  • 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

FollowUpThen features and specs

  • Ease of Use
    FollowUpThen allows users to create follow-up reminders by simply sending an email with a specific timeframe in the address (e.g., 1day@followupthen.com). This simplicity makes it user-friendly and quick to use without needing extensive setup.
  • Email Integration
    The service integrates seamlessly with email, which means users donโ€™t have to switch to a different platform or application to set reminders. It works directly within the userโ€™s current email workflow.
  • Versatility
    FollowUpThen offers a range of scheduling options (e.g., specific times, recurring reminders) that cater to various user needs, making it a versatile tool for different follow-up scenarios.
  • Cross-Platform Compatibility
    Since FollowUpThen utilizes email, it can work across all email clients and devices, ensuring that users can access and utilize the service from anywhere.
  • Free Plan Availability
    A free tier provides essential features, making it accessible for users to test and use without immediate financial commitment.

Possible disadvantages of FollowUpThen

  • Email Dependence
    The serviceโ€™s reliance on email can be a drawback for users who prefer other communication tools or for those who have a cluttered inbox, potentially leading to missed follow-ups.
  • Limited Features on Free Plan
    The free version of FollowUpThen has limited features, which might push users to upgrade to a paid plan to access more advanced functionalities.
  • Privacy Concerns
    Users must send their emails through the FollowUpThen service, which may raise privacy and security concerns for sensitive information.
  • Learning Curve for Advanced Features
    While basic usage is straightforward, utilizing advanced features and maximizing the tool's potential might require a learning curve and more familiarity with the service.
  • Subscription Costs
    For access to premium features, users must subscribe to a paid plan, which can be a drawback for budget-conscious individuals or small businesses.

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 FollowUpThen

Overall verdict

  • Overall, FollowUpThen is considered a good tool for enhancing email productivity. It is especially useful for professionals who manage numerous emails daily and need an efficient way to ensure timely responses and task completion. The service's ease of use, combined with its automation capabilities, makes it a valuable addition to many users' workflow.

Why this product is good

  • FollowUpThen is a popular email reminder and scheduling tool that allows users to create follow-up reminders by using time-based email addresses. It simplifies the process of keeping track of important emails and tasks by allowing users to automatically receive follow-up reminders at a specified time, ensuring that nothing falls through the cracks.

Recommended for

  • Professionals who manage a large volume of emails
  • Individuals who often forget to follow up on important emails
  • Teams that need to coordinate follow-up tasks efficiently
  • Users looking for an easy-to-use email reminder tool without needing to integrate it into their email client

FollowUpThen videos

Best email follow up reminder tool - FollowUpThen review

ForthWrite videos

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

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Category Popularity

0-100% (relative to FollowUpThen and ForthWrite)
Email Productivity
93 93%
7% 7
Writing Tools
0 0%
100% 100
Email Tools
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing FollowUpThen 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

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Reviews

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

FollowUpThen Reviews

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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, FollowUpThen seems to be more popular. It has been mentiond 2 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.

FollowUpThen mentions (2)

  • Suggestion for volunteers who do projects
    I do a lot of volunteering with skills matching nonprofits. These are usually one hour "ask the expert" or 1-4 week projects. Most nonprofits have very little experience in project work so you have to remind them to do things. I use followupthen.com with my emails to make sure I don't lose track of them. The free level of FUT.com does all I want. Send a note to someone with... Source: almost 4 years ago
  • Some Useful Websites that you should must use
    ๐Ÿ“Ž52. followupthen.com: Setup quick reminders via email itself. Source: over 4 years ago

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 FollowUpThen and ForthWrite, you can also consider the following products

Followup.cc - FollowUp for email is a lightweight productivity suite that keeps your conversations and tasks from slipping through the cracks. Set perfectly timed reminders that arrive at the top of your inbox, right when you need them.

Superhuman - Superhuman is an email management tool.

Gmelius - Gmelius is the first collaboration platform designed for G Suite and your company's daily tools.

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.

Right Inbox - Schedule Emails in Gmail To Be Sent Later

Lavender - Realtime coaching for sales emails.