Best AI Email Assistants

Best Paid AI Email Assistants

Superhuman

Superhuman is an ultra-fast email client built for productivity power users. Its integrated AI features include smart reply suggestions, message summarization, and tone rewriting, allowing users to compose and respond to emails faster than ever. Designed specifically for Gmail and Outlook users, Superhuman combines speed, keyboard-driven workflows, and AI to help you hit inbox zero quickly. Ideal for executives, sales reps, and founders, it also includes read receipts, snooze functions, and follow-up reminders that make email management feel effortless and modern.

Flowrite

Flowrite takes short prompts or bullet points and turns them into full, tone-matched emails in seconds. It’s ideal for professionals who write frequent emails but want to save time on formatting and phrasing. With style presets like “formal,” “friendly,” or “persuasive,” Flowrite ensures your messages always match the situation. Especially useful for quick follow-ups, introductions, or updates, the paid version allows more monthly generations and custom tone settings, making it a go-to tool for busy professionals managing high email volume.

Jasper for Email

Jasper’s AI platform includes robust tools for crafting long-form, persuasive, or highly personalized emails. Perfect for sales teams, marketers, and customer service pros, Jasper helps tailor each message’s tone and structure for maximum engagement. Features like tone sliders, templates, and CRM integration make it easy to craft campaigns, outreach sequences, or responses at scale. Its token-based model supports flexible usage across different content types, with email writing being one of its strongest suits in the context of brand voice and conversion focus.

ChatSonic (Writesonic)

ChatSonic is part of Writesonic’s content creation suite and offers preset-driven AI email generation based on user prompts. Whether you’re sending a cold pitch, client update, or team follow-up, ChatSonic can craft the content instantly with your desired tone. It supports multi-turn conversations and custom instructions, giving users more control over how emails are generated. Token limits apply, but it’s a versatile tool for entrepreneurs, freelancers, and small businesses looking for affordable email automation within a broader AI writing toolkit.

Missive + AI

Missive combines team inbox functionality with GPT-powered writing assistance, offering an all-in-one collaboration platform for shared email management. Users can compose replies, summarize conversations, and auto-generate emails using their own OpenAI key. Designed for teams, Missive allows internal chat threads, assignments, and shared drafts directly inside email conversations. The AI integration is a bonus for organizations that want to streamline communication without switching tools. It’s perfect for customer service teams, startups, and distributed teams managing high-volume inboxes together.

Best Free AI Email Assistants

ChatGPT (Free)

ChatGPT’s free version is a flexible tool for drafting, rewriting, or proofreading emails of any length. Just give it a prompt or topic, and it will generate responses in a tone of your choice. While it doesn’t integrate directly into email platforms, it’s great for composing professional or creative emails that you can copy and paste. Whether you're writing a job inquiry, follow-up, or cold pitch, ChatGPT makes drafting faster and easier—especially for users who want thoughtful communication without writer’s block.

Flowrite (Free Tier)

The free tier of Flowrite lets users test its bullet-to-email generator with a limit of five emails per month. It's a fast and polished experience that gives you a preview of how much time Flowrite can save with just a few keystrokes. Users can choose from different tones and email types, such as follow-ups, intros, and thank-yous. Though limited, the free version is a great way to explore AI-enhanced writing for those who send routine emails and want a faster, more confident workflow.

Canary Mail

Canary Mail is a privacy-focused email client that integrates AI features like smart suggestions, summary previews, and drafting assistance. It supports Gmail, iCloud, and custom email domains, and offers a clean, secure interface for personal or professional use. The free version is limited to personal accounts but still includes key AI tools. Ideal for users who want a built-in email assistant without relying on external writing platforms. Canary is especially useful for those prioritizing email privacy and built-in productivity enhancements.

Gmail Copilot (Chrome)

Gmail Copilot is a Chrome extension that adds GPT-based drafting directly into your Gmail compose window. Users can type a short phrase or prompt, and the extension will generate a full email response using your own OpenAI key. It’s fast, context-aware, and works directly inside the Gmail interface. While it lacks deeper automation or analytics, it’s a solid option for individual users who want smart reply assistance without leaving their inbox. Ideal for freelancers, consultants, and students writing on the fly.

Friday AI (Free Email Tool)

Friday AI’s free email writer helps users craft simple emails quickly using structured prompts and templates. It’s especially good for writing cold outreach, short updates, or thank-you notes without overthinking the wording. The interface is user-friendly and doesn’t require sign-up for basic use. While customization is limited, it’s a handy tool for occasional users who want help getting started or who struggle with writer’s block. It’s perfect for students, solopreneurs, or job seekers needing a clean draft fast.