Software Alternatives, Accelerators & Startups

InStream CRM VS ForthWrite

Compare InStream CRM VS ForthWrite and see what are their differences

InStream CRM logo InStream CRM

Business relationship management platform - CRM alternative

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.
  • InStream CRM Landing page
    Landing page //
    2021-12-12
  • 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.

InStream CRM

Pricing URL
-
$ Details
-
Platforms
-
Release Date
-

ForthWrite

$ Details
freemium $12 / 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

InStream CRM features and specs

  • User-Friendly Interface
    InStream CRM is designed with a clean and intuitive interface that makes it easy for users to navigate and manage their customer relationships effectively.
  • Customizable Features
    The platform offers various customization options, allowing businesses to tailor the CRM system to their specific needs, including custom fields and tags.
  • Integration Capabilities
    InStream CRM can integrate with several popular third-party applications, enhancing its functionality and allowing seamless data transfer across platforms.
  • Affordable Pricing
    The CRM offers competitive pricing plans, making it accessible for small to medium-sized businesses looking for efficient customer relationship tools without a high cost.
  • Contact Management
    InStream provides robust contact management features, ensuring users can easily organize, track, and maintain their customer information.

Possible disadvantages of InStream CRM

  • Limited Advanced Features
    Compared to some other CRM systems, InStream might lack certain advanced features that larger enterprises may require, such as advanced analytics or reporting tools.
  • Learning Curve for Advanced Customization
    While the basic features are user-friendly, there might be a learning curve associated with advanced customization options, which may require additional time and effort to master.
  • Scalability Concerns
    As businesses grow, they may find that the features of InStream CRM are not as scalable as needed, potentially necessitating a switch to a more comprehensive CRM solution.
  • Mobile Application Limitations
    Users have reported that the mobile application version of InStream CRM could be limited in functionality compared to its desktop counterpart.
  • Support and Documentation
    Some users have mentioned that the support and documentation provided by InStream CRM could be improved for quicker troubleshooting and a better understanding of features.

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 InStream CRM

Overall verdict

  • InStream CRM is considered a good option, particularly for small to mid-sized businesses seeking a CRM solution that emphasizes simplicity and effective relationship management. Users typically find it to be a cost-effective and functional choice, especially if they prioritize ease of use and integration capabilities.

Why this product is good

  • InStream CRM is praised for its user-friendly interface and strong focus on relationship management. It provides features such as contact management, sales tracking, and pipeline management, which are integral for businesses looking to improve their sales processes and customer interactions. The platform often receives positive feedback for its customization options and app integrations, enhancing productivity and workflow efficiency.

Recommended for

    InStream CRM is recommended for small to medium-sized enterprises and sales teams that require an intuitive, relationship-focused CRM solution. It is particularly beneficial for companies looking to streamline their sales processes without being overwhelmed by overly complex tools. Additionally, it suits businesses that appreciate customizable pipelines and the ability to integrate with other applications to enhance operational efficiency.

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

Category Popularity

0-100% (relative to InStream CRM and ForthWrite)
Sales
100 100%
0% 0
Email
0 0%
100% 100
CRM
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing InStream CRM 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 InStream CRM and ForthWrite

InStream CRM Reviews

9 Cheap Salesforce Alternatives that Make CRM as Simple as Amazon.com
InStream was founded in Poland in 2015, and quickly caught hold in the SMB CRM market. It comes in at No. 4 on Capterraโ€™s Top 20 Most Affordable CRM Software list, starting at only $6/month for single users. They even offer a free plan for one user and 100 contacts. InStream automatically synchronizes contacts with social media accounts. Users praise InStream for its sleek...

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)

What are some alternatives?

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

Onesheet CRM - The Simple CRM for Google Sheets

ReclaimAI - Helps users prioritize their work and personal calendars

Freshsales CRM - A full-fledged CRM for high-velocity sales teams.

Superhuman - Superhuman is an email management tool.

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.

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