Best 6 Tools for Writing Emails in 2025

Letterly is an AI-powered mobile application that converts spoken words into well-structured, polished text. Unlike basic voice-to-text tools that only transcribe what you say, Letterly uses advanced artificial intelligence to understand, organize, and improve your speech automatically. The app offers over 25 different rewrite options, allowing you to transform your voice into various formats like formal emails, social media posts, structured notes, or casual messages.

Mailgun is a cloud-based email delivery service designed specifically for developers and businesses who need to send emails programmatically through their applications. Think of it as the engine that powers email functionality in websites and apps - from simple contact forms to complex automated email workflows.

Open WebUI is a self-hosted artificial intelligence interface that lets you interact with language models on your own hardware. Think of it like ChatGPT, but running entirely on your computer or private server instead of in the cloud.

Google Gemini is an advanced AI assistant powered by Google's most capable language models, including Gemini 2.5 Pro and Gemini 2.5 Flash. Think of it as your personal AI companion that can understand and work with text, images, videos, and audio all in one place.

Tactiq is an AI-powered meeting transcription and productivity tool designed to capture, analyze, and organize meeting conversations in real-time. Think of it as your personal meeting assistant that works silently in the background. Built as a Chrome and Edge browser extension, Tactiq integrates seamlessly with popular video conferencing platforms like Google Meet, Zoom, and Microsoft Teams without installing bots or recording audio.

ChatGPT is an advanced AI chatbot developed by OpenAI that uses large language models to have natural conversations with people. Think of it as a super-smart digital assistant that can understand and respond to almost any question or request you have.