Software Alternatives, Accelerators & Startups

Sumo VS ForthWrite

Compare Sumo VS ForthWrite and see what are their differences

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Sumo logo Sumo

Free tools to grow your email list.

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
  • Sumo Landing page
    Landing page //
    2023-08-06
  • 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.

Sumo

$ Details
-
Platforms
-
Release Date
-
Startup details
Country
United States

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

Sumo features and specs

  • Ease of Use
    Sumo provides a user-friendly interface that is easy for non-technical users to navigate and set up. This simplicity allows businesses to quickly implement and benefit from its tools without a steep learning curve.
  • Comprehensive Tools
    Sumo offers a suite of tools including email capture forms, pop-ups, heat maps, and social sharing buttons. This wide range of functionalities helps businesses grow their email lists, understand user behavior, and enhance social engagement.
  • Integration Compatibility
    Sumo integrates seamlessly with various other platforms and services such as Mailchimp, Shopify, Google Analytics, and more. This allows for streamlined operations and data syncing across different tools.
  • Customization Options
    Users can customize the design and behavior of pop-ups, forms, and other elements to match their branding and specific user flow requirements. This ensures a cohesive user experience.
  • Analytics
    The platform offers detailed analytics and reporting, making it easier to measure the effectiveness of campaigns and understand user interactions.

Possible disadvantages of Sumo

  • Pricing
    While Sumo offers a free version, many advanced features are locked behind a subscription paywall. This can be a barrier for small businesses or startups with limited budgets.
  • Performance Impact
    Using multiple Sumo tools can sometimes slow down website performance, potentially affecting user experience and SEO rankings.
  • Limited A/B Testing
    Compared to some competitors, Sumo's A/B testing capabilities are somewhat limited, which might restrict users from optimizing their campaigns to the fullest extent.
  • Customization Complexity
    While there are customization options available, making advanced customizations can be difficult for users without technical knowledge, requiring external help or additional tools.
  • Support
    Some users have reported that customer support response times can be slow, and the quality of support varies, which can be problematic when issues arise.

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 Sumo

Overall verdict

  • Sumo can be a great resource for businesses and individuals looking for affordable software solutions, especially if they wish to experiment with new tools without a large financial commitment. However, it's crucial to assess each deal for its long-term value and suitability for your specific needs.

Why this product is good

  • Sumo, available at appsumo.com, is a popular platform for discovering software deals and discounts, particularly favored by entrepreneurs, small business owners, and startups. Sumo often provides lifetime access to various tools and services at a one-time price, making it a cost-effective solution for those looking to enhance their business operations without committing to recurring subscriptions. The platform is known for curating quality software products and offering them at significant discounts, which can help businesses save money and access valuable resources.

Recommended for

  • Startups seeking affordable tools to manage and grow their business.
  • Entrepreneurs interested in exploring new software solutions.
  • Small businesses looking to save on software costs.
  • Tech-savvy individuals who enjoy trying out new tools for personal projects.

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

Sumo videos

Ozzy Man Reviews: Sumo Wrestling

More videos:

  • Review - Tata Sumo Gold EX 2018 | Real-life review
  • Review - Tata Sumo Grande GX BS4 2016 | Real-life 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 Sumo and ForthWrite)
Email Marketing
100 100%
0% 0
Email
0 0%
100% 100
Popups
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Sumo 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 Sumo and ForthWrite

Sumo Reviews

We have no reviews of Sumo yet.
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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, Sumo seems to be more popular. It has been mentiond 1 time 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.

Sumo mentions (1)

  • Sumo.com scripts on my site not working in Firefox.
    I went to sumo.com & grabbed the code again & put it the website. Are you still having the same problem? Source: about 4 years ago

ForthWrite mentions (0)

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

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Superhuman - Superhuman is an email management tool.

ClickCease - ClickCease is aย click fraud detection and protection solution.

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