Grammarly
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A writing helper that quietly fixes your mistakes and nudges your tone wherever you type.
Free · Pro $12/mo
Writing & Content
✉️Best Email Writing AI tools in 2026
Email writing tools help with the messages you put off: tricky replies, follow-ups, cold outreach and that overflowing inbox. They draft responses from a few notes and remind you when someone has gone quiet.
We would check which inbox it works with, how well it picks up context from earlier threads, and how it handles your data. Many include a free allowance of drafts, with paid plans unlocking unlimited replies, triage and team templates.
The one most people reach for is Grammarly.
Budget-wise, paid plans start anywhere from $12 to $30 a month — most land around $27. Good news: 2 of the 3 let you start for free.
Our top picks
3 tools
Superhuman
No reviews yet
An email app built for speed, with AI that drafts replies and helps you hit inbox zero.
From $30/mo
Lavender
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A friendly coach in your inbox that scores your sales emails and tells you how to make them land.
Free · Pro $27/mo
Email Writing AI tools: FAQ
What is the best email writing AI tool in 2026?+
Our shortlist: Grammarly (new, $12), Superhuman (new, $30) and Lavender (new, $27).
Can I use a email writing AI tool for free?+
Absolutely — 2 tools here have a free plan. We’d start with Grammarly and Lavender.
How much should I expect to pay for email writing software?+
Most paid plans sit around $27/month. The cheapest we list starts at $12, the priciest at $30.
Which email writing tools can developers build on?+
1 offer an API — handy if you want to plug them into your own product. Try Lavender.