Email and writing
Best AI tools for email and writing
4 tools for non-technical professionals. Filter by what you're willing to pay.
Our shortlist for email and writing is Grammarly, Superhuman, Jasper and Inbox Zero. 2 of the 4 have a free plan or free tier, and we checked all 4 free-tier notes against official pricing pages. If you want to start for free, try Grammarly first.
4 tools for email and writing
If a tool is tagged "Affiliate link: we may earn a commission," we may get paid when you sign up through our link. It costs you nothing extra. How we order tools · How we make money
- Generous free tierPricing checked · Oct 15, 2026 · source for Grammarly's pricing (opens in a new tab)$12/mo
- Paid onlyPricing checked · Oct 20, 2026 · source for Superhuman's pricing (opens in a new tab)$25/mo per member billed annually for Superhuman Mail Starter
- Trial onlyPricing checked · Oct 15, 2026 · source for Jasper's pricing (opens in a new tab)$69/mo, or $59/mo billed annually
Inbox Zero (opens in a new tab)
Open-source AI email assistant that sorts and labels mail, drafts replies in your voice and blocks cold email, in Gmail or Outlook
Your tool? Get a badgeLimited free tierPricing checked · Oct 19, 2026 · source for Inbox Zero's pricing (opens in a new tab)$18/user/mo billed annually ($20 monthly)
How to choose
Start with what you're willing to pay. Grammarly is tagged free or generous free tier. Inbox Zero has a limited free tier. Superhuman and Jasper need a trial or a paid plan.
Where we could read a price on the official pricing page, the lowest paid plans start at: Grammarly $12/mo; Superhuman $25/mo per member billed annually for Superhuman Mail Starter; Jasper $69/mo, or $59/mo billed annually; Inbox Zero $18/user/mo billed annually ($20 monthly). Prices change often, and we don't always know whether a figure is billed monthly or annually, so confirm on the tool's site.
- Grammarly is the pick for everyday writing polish: writing assistant with AI rewriting. Free tier: free $0: spelling and grammar checks; Pro $12/month with 7-day trial.
- Superhuman is for heavy email users: fast email client with AI drafting. Free tier: no free plan for Superhuman Mail; the free Superhuman plan covers AI writing help, Docs and the Go assistant, not the Mail app.
- Jasper is for marketing teams: AI marketing content platform. Free tier: 7-day free trial; Pro $69/month per seat ($59/month billed annually).
- Inbox Zero is for triaging a busy Gmail or Outlook inbox: open-source AI email assistant that sorts and labels mail, drafts replies in your voice and blocks cold email, in Gmail or Outlook. Free tier: email app is free on web, desktop and iPhone; AI plans start at $18/user/month billed annually, with a 7-day free trial.
Free tiers last checked Oct 20, 2026 against each tool's official pricing page (linked on each checked tool). Prices change often, so confirm on the tool's site.
Questions
- Which AI tools for email and writing are free?
- Grammarly (generous free tier) and Inbox Zero (limited free tier). Superhuman and Jasper don't have a free tier.
- Which has the cheapest paid plan?
- Of the prices we could read on official pricing pages, Grammarly starts lowest at $12/mo.
- How did you check these free tiers?
- We compared all 4 free-tier notes on this page against each tool's official pricing page, most recently on Oct 20, 2026. Each checked tool links to the page we used.
- Which tool should I pick?
- Grammarly is the pick for everyday writing polish. Superhuman is for heavy email users. Jasper is for marketing teams. See the full list below.
Disclosure: some links on StackDrop are affiliate links. If you sign up or buy through them, we may earn a commission at no extra cost to you. Tools in a "Featured" box labeled Sponsored are paid placements. They're shown separately from our regular listings. How we choose and order tools.