Best AI Email Writing Tools in 2026
Updated
In short: WriteMail.ai is ranked #1 of 28 as of 4 October 2026, ahead of AI Perfect Assistant and Kerna. The best-ranked option with a free plan is AI Perfect Assistant. The lowest first paid tier on this page is WriteMail.ai at $0.42/mo.
AI email writing tools are designed to help you compose or revise messages, with different ways to guide the text and shape its tone. Compared on browser extension availability, mail client support, email context input, and custom instructions, they can be weighed against where you write and how much direction you want to provide. Tone controls and supported languages matter for the kinds of messages you send, while free plans and paid-from prices offer cost context. The ranking opens with WriteMail.ai and ForthWrite, followed by MailMaestro. Check how each tool’s listed options align with your email workflow and writing needs.
28 AI email writing tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
11 of the 25 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | WriteMail.aiWeb · Windows · Mac · Android · iPhone · Extension | Three bars | — | 5 of 6 | $0.42/mo | 6.8 | |
| 2 | AI Perfect AssistantWeb · Windows · Android · iPhone · Extension | Three bars | — | 4 of 6 | $16.99/mo | 6.6 | |
| 3 | KernaWeb · Windows · Mac | Three bars | — | 3 of 6 | €12/mo | 6.6 | |
| 4 | EllieWeb · Windows · Extension | Two bars | — | 2 of 6 | $19/mo | 6.5 | |
| 5 | ForthWriteWeb · Windows · Mac · API · Extension | Three bars | — | 3 of 6 | $24/mo | 6.5 | |
| 6 | GPT for GmailWeb · Android · iPhone · Extension | Three bars | — | 3 of 6 | $9/mo | 6.5 | |
| 7 | Jetwriter AIWeb · Extension | Two bars | — | 1 of 6 | $14/mo | 6.4 | |
| 8 | MailMaestroWeb · Extension | Two bars | — | 1 of 6 | $1/mo | 6.4 | |
| 9 | LavenderWeb | Two bars | — | 1 of 6 | $27/mo | 6.3 | |
| 10 | DemiMac | Two bars | — | 1 of 6 | $25/mo | 6.2 | |
| 11 | thread.No platforms listed | Two bars | — | 0 of 6 | Free | 6.1 | |
| 12 | WPS AI Email WriterWeb · Windows · Mac · Linux · Android · iPhone | One bar | — | — | 6 of 6 | — | 5.6 |
| 13 | Professionally AI Email WriterWeb · Windows · Mac · iPhone · Extension | Two bars | — | — | 4 of 6 | $5.40/mo | 5.3 |
| 14 | Workforce AI Email DrafterWeb | One bar | — | — | 1 of 6 | — | 5.3 |
| 15 | XemailWeb · Android · iPhone | One bar | — | — | 3 of 6 | — | 5.3 |
| 16 | Composer AIWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 17 | DraftKindAndroid | No signal | — | — | 1 of 6 | — | 5.2 |
| 18 | FlailoWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 19 | MailSomeWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 20 | ReplyCalmWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 21 | MailyrNo platforms listed | No signal | — | — | 0 of 6 | — | 5.1 |
| 22 | OpenReplyNo platforms listed | No signal | — | — | 0 of 6 | — | 5.1 |
| 23 | SalesPort AI Email WriterWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 24 | AI Email Assistant for ThunderbirdNo platforms listed | No signal | — | — | 0 of 6 | — | 5.0 |
| 25 | InReplyWeb | One bar | — | — | 1 of 6 | £39/mo | 4.9 |
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which AI email writing tool is ranked first on Freedom251?
WriteMail.ai is ranked #1 of 28 with a score of 6.8. AI Perfect Assistant is second and Kerna third.
How many of these have a free plan?
11 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, WriteMail.ai has the lowest first paid tier we found: $0.42/mo.
How is this list ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation. Paid placements never change a rank.