ForthWrite

ForthWrite is an AI writing assistant specifically designed to optimize email management in Gmail and Outlook. Unlike other generic text generators, this tool specializes in learning the user's writing style by directly analyzing their sent messages. Its primary function is to act as a co-pilot that drafts intelligent replies in seconds, allowing you to maintain a personal and consistent voice even when managing a high volume of correspondence from your computer.

ForthWrite works by conducting a deep analysis of the user's tone, sentence rhythm, and common sign-offs. By capturing these patterns from actual emails, the AI generates responses that don't sound automated. One of its most notable technical capabilities is BYOK (Bring Your Own Key) support, which allows users to connect their own API keys from advanced models like Claude, OpenAI, Grok, or Mistral. Additionally, the system implements continuous learning: every time a user edits or sends a draft, the model adjusts its accuracy to better mimic their unique communicative identity.

Key features and practical benefits include:

• Auto-draft: The tool automatically generates draft replies even before the user opens their inbox, drastically boosting productivity.
• Data-driven personalization: It doesn't use predefined templates; instead, it builds a linguistic profile from sent message history to ensure authenticity.
• Recipient adaptation: Drafts are recipient-aware, meaning the AI automatically adjusts the level of formality and content based on the person being messaged.
• Prompt Lab: Includes an environment for A/B testing and version control of the instructions that define the AI's personality, allowing for fine-tuning of the assistant's behavior.
• Data portability: Offers the option to export training data, ensuring the user always maintains control over their personal information.

This app is especially useful for professionals and teams who need to save time on email management without losing the human touch in their interactions. ForthWrite integrates directly into the web versions of Gmail and Outlook and also features a standalone browser widget that makes it easy to use across different work contexts. By eliminating the need to manually configure the tone of voice, users can focus exclusively on reviewing and sending, achieving efficient and professional communication at scale.