ForthWrite

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Score7.1

Rank#5 of 28

From$24/mo

Free planYes

Free trialYes

Runs onAPI, Browser extension, macOS, Web, Windows

Summary

ForthWrite drafts replies using a writing profile learned from a user's sent email. Its free plan works with Gmail and Outlook on the web and allows 10 drafts per week; an Outlook add-in is available for Outlook desktop on Windows or Mac. The free plan excludes custom persona, auto-draft, batch drafting, coaching, analytics, and dictation. Pro is listed at 24.00 USD per month billed annually, with the page also showing $29/mo, and adds unlimited drafts, auto-draft, batch drafting, custom persona, RAG, and dictation. Teams has a two-seat minimum and includes Pro features, shared team persona, Prompt Lab, review records, and team analytics. Slack drafting requires Standard or Pro. A Claude connector can create a draft or contact summary but does not send mail or open a mailbox. ForthWrite says it passed Google's CASA Tier 2 assessment for its restricted Gmail read-only scope. Its privacy policy says routine thread content is not retained after a draft is returned, while sent-email snippets are stored to learn the user's voice. It does not currently read or analyze attachments.

Who it is for

ForthWrite suits professional services firms and individuals who write client email in Gmail or Outlook. Teams considering it should account for the review records visible to owners and admins and the storage of sent-email snippets.

What is good

Learns a writing profile from sent email.
Free plan supports Gmail and Outlook on the web.
Outlook desktop add-in is available for Windows and Mac.
Claude connector can draft or provide a contact summary.

What to know first

Free plan is limited to 10 drafts per week.
Slack drafting requires Standard or Pro.
Does not currently read or analyze email attachments.
Team owners and admins can view and export review records.

Verdict

ForthWrite focuses on drafting email in a user's established writing style, with different features across its plans. Check the draft limits, attachment limitation, and team review access before choosing it.

ForthWrite plans and pricing

All plans

Free Free 10 drafts per week · Gmail and Outlook on the web · no custom persona, auto-draft, batch drafting, coaching, analytics, or dictation forthwrite.ai · 30 Sept 2026

Pro $24/mo $288/yr billed annually; page also shows $29/mo Unlimited drafts · auto-draft and batch drafting · custom persona, RAG, dictation · priority support forthwrite.ai · 30 Sept 2026

Teams $59/mo Page also shows $79/seat/mo Save 25% 2 seat minimum · 30-day trial · Pro features · shared team persona and Prompt Lab · review record · team analytics forthwrite.ai · 30 Sept 2026

Compared on AI email writing tools

Free plan: Yesforthwrite.ai
Tone controls: Yesforthwrite.ai
Custom instructions: Yesforthwrite.ai
Email context input: threadforthwrite.ai
Browser extension: Yesforthwrite.ai
Mail client support: bothforthwrite.ai

Facts

Purpose: ForthWrite drafts replies using a writing profile learned from a user's sent email.forthwrite.ai · 30 Sept 2026
Email clients: The free plan works in Gmail and Outlook on the web, and the Outlook add-in is available for Outlook desktop on Windows or Mac.forthwrite.ai · 30 Sept 2026
Slack: Slack drafting uses message and compose shortcuts or the /forthwrite command, and requires Standard or Pro.forthwrite.ai · 30 Sept 2026
Claude connector: The Claude connector can generate a draft or return a contact summary; it does not send mail or open a mailbox.forthwrite.ai · 30 Sept 2026
AI providers: The Outlook page lists BYOK support for OpenAI, Anthropic, Google, xAI, DeepSeek, Mistral, Perplexity, Cohere, and Groq.forthwrite.ai · 30 Sept 2026
Security assessment: ForthWrite says it passed Google's CASA Tier 2 assessment for its restricted Gmail read-only scope.forthwrite.ai · 30 Sept 2026
Data handling: The privacy policy says routine thread content is not retained after a draft is returned, while sent-email snippets are stored to learn the user's voice.forthwrite.ai · 30 Sept 2026
Team review: Teams owners and admins can view and export review records containing drafted messages, revisions, sent text, model, and timestamps.forthwrite.ai · 30 Sept 2026
Notable limitation: ForthWrite says it does not currently read or analyze email attachments.forthwrite.ai · 30 Sept 2026
Who it serves: The maker describes the product as software for professional services firms and individuals who write client email.forthwrite.ai · 30 Sept 2026
Support: The About page says the founder invites users to email feedback and bug reports directly at [email protected].forthwrite.ai · 30 Sept 2026
Company: ForthWrite is operated by Aesir Labs, LLC; its founder is Curtis Boortz, listed in San Diego, California.forthwrite.ai · 30 Sept 2026