Automate Basics

AI email and inbox tools

AI email tools sort incoming mail, summarise long threads and draft replies in your voice. Some are complete email apps; others work on top of Gmail or Outlook without changing how you read mail.

4 tools · prices checked 16 October 2026 · no rankings are paid for

A letter tray of envelopes behind a phone showing an inbox with an AI-drafted reply

Superhuman Mail

AI email app for teams that use Gmail or Outlook

From $25/member/mo

Shortwave

AI email client for Gmail and Google Workspace accounts

Free plan · from $18/seat/mo

SaneBox

Email filtering service that sorts less important mail into separate folders

Free trial · from $5.42/mo

Spark Mail

Cross-platform email app with a smart inbox, AI writing and team features

Free plan · from $8.25/user/mo

Side by side

Tick up to 4 tools to compare them in one table, or filter and sort all 4 by price and platform.

CompareToolFree planStarting priceOpen sourcePlatforms
Superhuman Mail$25/member/mo (annual)NomacOS, Chrome extension
Shortwave$18/seat/moNoWeb, macOS, Windows, iOS
SaneBox$5.42/mo (annual)NoiOS, Android
Spark Mail$8.25/user/mo (annual)NomacOS, Windows, iOS, Android

Entry prices are the cheapest paid plan per month, as published by each vendor. Annual means the monthly rate when billed yearly.

How to choose

  1. 1

    Does it support your provider: Gmail, Google Workspace, Outlook or Microsoft 365?

  2. 2

    Do you want a new email app, or help inside the one you use?

  3. 3

    Which AI features are on each plan, and is there a free tier?

  4. 4

    What access does it need to your mailbox, and what does it store?

  5. 5

    Can it send email on its own, or does it only draft replies for you to check before they go out?

Also worth a look

Tools listed elsewhere that do this job too.

Lindy

AI assistant that works in Slack, email and meetings to handle routine tasks

AI agentsFrom $29.99/user/mo

Front

Shared inbox and ticketing platform for customer-facing teams, with AI as paid add-ons

Customer supportFree trial · from $25/seat/mo

Questions

What are AI email and inbox tools?

AI email tools sort incoming mail, summarise long threads and draft replies in your voice. Some are complete email apps; others work on top of Gmail or Outlook without changing how you read mail.

Which AI email and inbox tools have a free plan?

Of the 4 listed here, 2 have a free plan: Shortwave and Spark Mail. Free plans are limited; each tool's page lists the limits.

Which of these AI email and inbox tools costs least to start?

Of the tools here with a published price, the lowest entry price is SaneBox's Snack plan at $5.42/mo billed annually, as published on its pricing page on 16 October 2026. The cheapest plan is not always the best value: check what each plan includes.