ForthWrite

Overview

ForthWrite drafts client-email replies in a voice learned from a user’s sent messages. It suits professionals who want a consistent style across recurring correspondence, but is less compelling for anyone who needs attachment-aware drafting or a general-purpose writing assistant.

Drafts use the email thread as context, with tone controls and custom instructions to steer the result. The focus is firmly on replies: the product’s strongest case is helping individuals and professional-services firms write client email in their established style.

Key features

Voice and email context

ForthWrite stores sent-email snippets to learn a user’s voice, while routine thread content is not retained after a draft is returned, according to its privacy policy. That distinction may suit users who want personalized drafts without routine thread retention, though retaining sent snippets is still a consideration for organizations with strict data-handling requirements.

The current thread informs drafts, and tone controls and custom instructions let users adjust them. The key gap is attachment handling: ForthWrite does not read or analyze email attachments, so messages that depend on attached proposals, contracts, or other documents need a separate review or workflow.

Connected workflows and oversight

The Claude connector can create a draft or return a contact summary, but it cannot open a mailbox or send mail. Slack drafting uses message and compose shortcuts or the /forthwrite command, and requires Standard or Pro. The Outlook page lists BYOK support for OpenAI, Anthropic, Google, xAI, DeepSeek, Mistral, Perplexity, Cohere, and Groq, giving Outlook users a choice of model provider.

ForthWrite says it passed Google’s CASA Tier 2 assessment for its restricted, read-only Gmail scope. Teams owners and admins can view and export review records that include drafted messages, revisions, sent text, model, and timestamps. That creates useful accountability for team oversight, but makes the review-record visibility an important privacy and governance decision before adoption.

Pricing

ForthWrite is freemium, with a free plan and a 14-day trial. The free tier is a low-risk way to assess whether its voice-based drafting fits an individual workflow, but its weekly quota and missing controls make it a limited long-term option.

PlanPriceWhat it includesFreefree10 drafts per week in Gmail and Outlook on the web; no custom persona, auto-draft, batch drafting, coaching, analytics, or dictation.Pro$24 a month (billed $288/yr billed annually; page also shows $29/mo)Unlimited drafts, auto-draft, batch drafting, custom persona, RAG, dictation, and priority support.Teams$59 a month (page also shows $79/seat/mo Save 25%)Two-seat minimum, 30-day trial, Pro features, shared team persona, Prompt Lab, review record, and team analytics.Pro is the practical step up for individuals who outgrow ten weekly drafts or need automation, batch work, or dictation. Its page shows both an annual-billing figure and a monthly figure, so buyers should check which term they are selecting. Teams adds shared controls and analytics, but its two-seat minimum and review-record access make it a team purchase rather than a solo upgrade; administrators’ ability to inspect and export records should be weighed against the benefit of oversight.

Platforms

ForthWrite spans API, browser extension, macOS, web, and Windows. Free supports Gmail and Outlook on the web; an Outlook add-in is available for desktop Outlook on Windows or Mac. Slack drafting requires Standard or Pro. This gives desktop Outlook users a route beyond the web experience, while Free users should expect to work in browser-based Gmail or Outlook.

Who it's for

Choose ForthWrite if you regularly write client email and want replies to reflect your established voice, especially if thread-based drafting and adjustable tone matter more than broad writing tools. Free can test that core workflow at ten drafts a week. Pro is better suited to an individual with heavier volume or a need for automation and dictation; Teams fits firms that want shared personas, analytics, and review records. Look elsewhere if your correspondence routinely depends on attachments or if team admins should not be able to inspect drafted and sent-text records.

Pros and cons

Pros: Uses sent-email snippets and thread context to shape replies, with tone controls and custom instructions for adjustment.

Pros: Free provides ten weekly drafts in Gmail and Outlook on the web, enough to evaluate the central workflow before paying.

Pros: Pro adds unlimited drafts, automation, batch drafting, and dictation for users with more demanding email workloads.

Cons: The free quota is ten drafts per week and excludes several advanced features, including a custom persona and auto-draft.

Cons: It cannot analyze attachments, limiting its usefulness for document-dependent client correspondence.

Cons: Teams review records are visible and exportable to owners and admins, which may not suit teams seeking more restricted access.

Alternatives

For a broader comparison, see AI Email Writing Tools. Each alternative below makes a different trade-off in quota, platform coverage, or price.

WriteMail.ai is worth considering if mobile coverage matters: it supports Android and iOS as well as desktop and browser platforms, with paid tiers that set monthly AI-email quotas.

Ellie may fit someone who wants ten free draft replies a day rather than ForthWrite’s ten per week; its free plan also limits users to one connected email account and one team seat.

WPS AI Email Writer is a fit for someone seeking a free, unlimited email-writing option without signup or ads, and supports a wider set of listed platforms including mobile and Linux.

AI Perfect Assistant may suit users who want Microsoft 365, Chrome, and Telegram integrations, though its free allowance is ten tokens per month.

Lavender is an alternative for users who prioritize email analysis and personalization, with a free plan capped at five of each per month.

Jetwriter AI is another extension-and-web option, with a free allowance of 15 regular-model responses per month and voice input.

Kerna may be preferable for users seeking a broader platform set that includes macOS, web, and Windows, with a free starter tier measured in tokens.

MailMaestro is an option for users who want compose, reply, and improve functions alongside templates and AI knowledge, though its free use is limited to three per week.

Verdict

ForthWrite is best for client-email writers who value replies shaped by their own sent-message voice and want a clear path from a small free quota to unlimited Pro drafting. Its focused workflow, controls, and team features are persuasive for that audience. Choose another tool if attachment analysis is essential, or if your team is uncomfortable with owners and admins viewing and exporting detailed review records.