Best AI Email Assistants in 2027: 7 Tools Compared

Email eats about 2.5 hours of the average office worker's day. The right AI email assistant gives a chunk of that time back: it drafts replies in your voice, summarises long threads, flags what needs a follow-up and clears the noise before you open your inbox.

The market is crowded and the pricing is confusing — some tools charge $30 a month, others cost $36 a year, and several hide their best AI behind a higher tier. Here is the short version of our full comparison: seven tools, verified pricing, and who each one actually suits.

The Seven, at a Glance

  • Superhuman — $30/user/month. The premium, keyboard-first client for people who live in email. Auto Drafts writes replies before you open the message. Best AI needs the $40 Business tier.
  • Shortwave — free plan; Pro $18/month. The best AI search in the category: ask a question and it reads up to 50 threads to answer. Gmail only.
  • Fyxer — free plan; Pro $49/month ($37 annual). Works inside Gmail and Outlook as an AI chief of staff, with a daily briefing and meeting notes. Usage is metered in credits.
  • Missive — Starter $14/month (annual); Productive $24. Built around shared inboxes, with AI drafting and routing on the higher tiers. The team pick.
  • Canary Mail — free plan; Growth $36/year. AI Copilot for $3 a month — the cheapest real AI in the roundup — plus on-device triage and PGP encryption on Pro+.
  • Spark — free plan; Plus $10/month. The most generous free email app here, with a limited AI preview. The obvious first step before paying for anything.
  • Gmail with Gemini — from $7/user/month via Google Workspace. Gemini is bundled into every Workspace Business plan, so millions of Gmail users already have AI in their inbox.

How to Pick One

Four questions narrow the field. Which mailbox do you use? Shortwave is Gmail-only; Superhuman covers Gmail and Outlook; Canary Mail and Spark connect to almost anything. Do you want a new app or AI inside your current inbox? Gemini and Fyxer layer onto what you have; the others replace it. Solo or team? Missive is built for shared inboxes. And budget: prices here range from $3 to $40 a month.

The Verdict

Start free with Spark or Canary Mail. For solo professionals on Gmail, Shortwave Pro at $18 a month is the best value. Money no object: Superhuman Business at $40. Team inbox: Missive Productive at $24 a user. Already on Google Workspace: try Gemini in Gmail before buying anything else.

One warning applies to every tool here: AI drafts still need checking. They can misread tone or invent a detail from a long thread. The time you save comes from reviewing a good draft, not from sending blindly.

This is a condensed explainer. The full comparison — with the complete pricing breakdown, pros and cons for each tool, and FAQ — is on NeurAITool: Best AI Email Assistants in 2027 (7 Compared).