"Best AI email assistant" is the wrong question. The right one is "best for what." A founder who wants replies that sound like them needs a different tool than a sales team that wants its CRM and meetings baked into every draft, or someone who just wants scheduling to handle itself.
So here is the honest version, sorted by the job you are hiring the tool to do. We make Pranan, and we will tell you exactly where it fits and where it does not.
Best for sounding like you: Pranan and Ellie
If the emails that matter are the ones where tone is everything, you want a tool built around voice, not speed. Pranan builds a per-user voice fingerprint from your sent mail and drafts replies that inherit your rhythm and sign-offs. It adds a relationship layer that shifts tone per recipient, a morning brief, and works across Gmail, Slack, and LinkedIn. It never sends without your approval, and there is a free-forever plan. Best for founders and operators; Gmail-native today, Outlook on the roadmap.
Ellie is the closest alternative: it learns your style and drafts overnight, supports Gmail, Outlook, and Fastmail, and adds multilingual drafting. Email-only, no relationship layer, but clean and quiet. Free plan plus paid from around $19 a month.
Best for deep context and sales teams: Revo
Revo connects to 50+ tools and includes a meeting recorder that drafts follow-ups before you have left the call. If your context lives across many systems and you send high-volume sales email, that depth pays off. It is the most expensive option here, around $37.50 per seat per month, and it is more setup than a voice-first tool.
Best for hands-off scheduling: Read AI (Ada)
Ada is an autonomous twin you cc on a thread. It negotiates meeting times without exposing your calendar and answers questions from your knowledge base and past meetings; for anything else it proposes a draft and waits for approval. Free, backed by Read AI's meeting data. Best if you want to delegate logistics.
Best Gmail-native AI client: Shortwave
Shortwave is the closest AI-first replacement for a traditional client: bundled threads, summaries, and drafting across your whole inbox. Free tier plus paid from around $7 a month. Best if you want a new email app, not a layer on top of Gmail.
Best for automatic triage: Fyxer
Fyxer leans into doing the inbox work for you: sorting, drafted replies, and meeting-note help, and it learns your style for tone. Premium-first, no free tier. Best if automation matters more than a keyboard-first experience.
Best premium speed: Superhuman
Superhuman remains the benchmark for keyboard-first speed, now with AI features. Best for executives who want a fast, high-touch client and will pay for it.
How to choose, in one line
- You want email that sounds like you: Pranan (or Ellie if you are on Outlook).
- Your context lives across many tools and you sell for a living: Revo.
- You want scheduling to handle itself: Read AI Ada.
- You want a new AI-native Gmail client: Shortwave.
- You want the inbox sorted and drafted automatically: Fyxer.
- You want raw speed and will pay for it: Superhuman.