✨BestAIforEmailSee top picks

AI Email Writing & Marketing

AI that drafts and improves email right where you work — Gmail Gemini, Outlook Copilot, Grammarly, Jasper and Mailchimp.

Quick answer

The top ai writing tools in 2026 are Gmail (Gemini), Grammarly, Outlook (Copilot). Below, all 5 are ranked on capability, pricing transparency, fit, and traction.

1

Gmail (Gemini)

AI Writing · AI Email Writing
8.6
Very Good

Google's Gemini AI built into Gmail for drafting, replies and summaries

Included in many Workspace plansIncluded / add-on

Best for: Anyone on Gmail who wants AI writing with zero new tools

Read reviewExplore Gmail AI
2

Grammarly

AI Writing · AI Writing
8.5
Very Good

AI writing assistant that improves tone, clarity and grammar in every email

Free; Pro from ~$12/moPer-seat / moSelf-serve

Best for: People and teams who want consistent, polished email everywhere they type

Read reviewTry Grammarly
3

Outlook (Copilot)

AI Writing · AI Email Writing
8.4
Very Good

Microsoft Copilot inside Outlook for drafting, coaching and summarizing email

Copilot add-on (~$30/user/mo)Per-seat add-on

Best for: Microsoft-anchored teams that want AI in Outlook and the whole suite

Read reviewExplore Outlook Copilot
4

Jasper

AI Writing · AI Marketing Writing
8
Very Good

AI content platform for marketing teams, strong at email campaigns and copy

From ~$39/user/moPer-seat / moSelf-serve

Best for: Marketing teams that want on-brand email and campaign copy

Read reviewTry Jasper
5

Mailchimp (AI)

AI Writing · Email Marketing
7.9
Good

Email marketing platform with AI for content, subject lines and send-time optimization

Free; paid scales with contactsMonthlySelf-serve

Best for: SMBs that want marketing email plus AI content and optimization

Read reviewTry Mailchimp