Free plans (9)
Their limits are stated in different terms, so they aren't ranked against each other. Ordered by first paid price.
| Tool | Stated limits | What makes you upgrade | First paid price | Kind |
|---|---|---|---|---|
 Canary MailRead Oct 29, 2026 |
Free forever plan with unified inbox, read receipts (lite), snooze and pin, templates, inbox zero, basic customization and unlimited mail accounts, up to 2 devices. No AI."Core inbox for students & personal use. Upgrade for AI & security."Source | Not found | $3/mo yearlyGrowth | Free plan |
 MailmeteorRead Oct 29, 2026 |
Free Hobby plan: 500 emails/month (50/day), 3 campaigns, 1 sender, email templates, tracker, email writer, 5,000 contacts. No credit card required."Entirely free. No credit card required."Source | More than 500 emails/month: Starter includes 5,000 | $5.99/userStarter | Free plan |
 Writemail.aiRead Oct 29, 2026 |
5 AI emails per month, no credit card required"5 AI emails /month"Source | More than 5 AI emails: Regular includes 50 | $6.95/moRegular | Free plan |
 Spark MailRead Oct 29, 2026 |
Free plan includes Smart Inbox, unlimited email accounts, smart notifications, essential email productivity and calendar. Free users get a limited preview of Spark +AI via AI Assistant and cannot buy add-ons when quota runs out."Free users can try a limited free preview of Spark +AI via AI Assistant, but cannot purchase add‑ons when their quota is used up."Source | Not found | $10/userPlus | Free plan |
 MailMaestroRead Oct 29, 2026 |
MailMaestro and TeamsMaestro both have a free plan you can keep using after the 14-day trial (limits not stated)"Both also have a free plan you can keep using after the trial."Source | Not found | $15/userEmail (MailMaestro) | Free plan |
 SuperhumanRead Oct 29, 2026 |
Free plan at $0 with limited Go chat, Grammarly writing help and Docs; Mail is not included until Business"Get started with AI assistance in all your favorite apps."Source | Mail is not included until Business | $15/userPro | Free plan |
 Inbox ZeroRead Oct 29, 2026 |
The email app is free to use on web, desktop and iPhone; the AI assistant is a paid add-on"Yes. The email app is free to use. The AI assistant plans include a 7-day free trial."Source | Not found | $20/userStarter | Free plan |
 CarlyRead Oct 29, 2026 |
Free plan includes MCP access, 10 Zapier-style workflows, multi-calendar view and Task Manager"MCP access — use Carly from Claude, ChatGPT, or any MCP client"Source | Not found | $35/moPersonal | Free plan |
 FyxerRead Oct 29, 2026 |
Free plan with 400 credits a month, audio meeting notes, 3 personal spaces; no inbox sorting or auto-drafted replies. Metered actions pause until renewal when credits run out."Metered actions pause until renewal"Source | Metered actions pause until renewal when credits run out | $49/userPro | Free plan |
Free trial only (12)
- alfred_: 7 days free on every plan, card required, not charged until trial ends
- Ellie: 7-day free trial, no card needed
- Front: 14-day free trial with all Professional plan features, no credit card needed
- Gemini in Gmail (Google Workspace): 14-day free trial
- Gmelius: 7-day free trial with access to the Growth plan; account suspended if you do not continue
- HeyHelp: 7-day free trial, no credit card required
- Jace AI: 7-day free trial on Plus and Pro, cancel anytime
- Mailbutler: 14-day free trial with all features, no credit card required
- Missive: 30-day free trial of the Productive plan, no credit card required
- SaneBox: 7-day free trial for each plan
- Serif: 7-day free trial with full access on every plan
- Shortwave: 14 day free trial
Questions
Which AI email assistants are free?
9 have a free plan you can keep, including Canary Mail, Carly, Fyxer, Inbox Zero, MailMaestro, Mailmeteor.
What do you pay after a free plan?
The lowest first paid price among tools with a free plan is $3/mo yearly (Canary Mail). Read from each vendor's own page.
How this page is made
Every limit is the vendor's own, read from its pages and quoted. A tool counts as a free plan when the text describes something you can keep using; a fixed number of days or a single batch of credits is listed separately. We don't test the plans. How prices are read.