Composer AI vs ForthWrite

Composer AI is an email drafting tool for Gmail that uses an email thread and the user’s tone to prepare replies. Users connect Gmail, open a message, review and edit the generated draft, then send it. The homepage states that replies are produced in under three seconds. Composer AI is available on the web and as a browser extension, using Google APIs to read Gmail threads during composition. Its Free Beta Tier costs nothing and includes 20 draft compositions per account; users may request a manual limit increase. The privacy policy says thread content and prompts are sent to OpenAI, retained for up to 30 days, and not used for model training. Full conversation and email content is logged to LangSmith for debugging and service improvement, with deletion after 14 days. The service is experimental beta software without service-level agreements or uptime guarantees and advises against highly sensitive communications.

ForthWrite drafts email replies using a writing profile learned from a user's sent email. The free plan works with Gmail and Outlook on the web, while an Outlook add-in is available for Outlook desktop on Windows or Mac. Free accounts get 10 drafts per week; the plan excludes custom persona, auto-draft, batch drafting, coaching, analytics, and dictation. Pro includes unlimited drafts, auto-draft, batch drafting, custom persona, RAG, and dictation. It is listed at $24 a month billed annually, and the page also shows $29/mo. Teams has a two-seat minimum and includes Pro features, a shared team persona, Prompt Lab, review records, and team analytics. Slack drafting requires Standard or Pro. A Claude connector can produce 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 kept after a draft is returned, while sent-email snippets are stored to learn the user's voice. Attachments are not currently read or analyzed.