Best AI Email Writing Tools in 2026
Updated
AI email writing tools can assist with drafting or revising messages, with different ways to provide context and steer the result. ForthWrite, WriteMail.ai, and MailMaestro are the first entries in the ranking. Compare email context input, custom instructions, and tone controls to see how you can guide a draft. Browser extensions and mail client support help you assess how a tool may fit where you write, while supported languages can matter for the messages you handle. Free-plan availability and paid-from pricing add access and cost considerations. Use the ranking order as a starting point, then weigh the listed features against your email workflow.
AI Email Writing Tools, one module each.A lit port is something its maker publishes; 2 of 2 with a known API signal have a public API.
- 01 Flailo API yesFREE yesDOCS 7.3$29/mo
- 02 ForthWrite API yesFREE yesDOCS 7.3$24/mo
- 03 Lavender FREE yesDOCS 6.0$27/mo
- 04 WriteMail.ai FREE yesDOCS 6.0$5/mo
- 05 AI Perfect Assistant FREE yesDOCS 5.9$16.99/mo
- 06 Demi FREE yesDOCS 5.9$25/mo
- 07 Ellie FREE yesDOCS 5.9$19/mo
- 08 GPT for Gmail FREE yesDOCS 5.9$9/mo
- 09 Jetwriter AI FREE yesDOCS 5.9$14/mo
- 10 Kerna FREE yesDOCS 5.9€12/mo
- 11 MailMaestro FREE yesDOCS 5.9$12/mo
- 12 MailSome FREE yesDOCS 5.9€8.25/mo
- 13 Mailyr FREE yesDOCS 5.9$4.90/mo
- 14 ReplyCalm FREE yesDOCS 5.9$9/mo
- 15 thread. FREE yesDOCS 5.9Free
- 16 Workforce AI Email Drafter FREE yesDOCS 5.9$99/mo
- 17 AI Email Assistant for Thunderbird FREE yesDOCS 5.8Free
- 18 Composer AI FREE yesDOCS 5.8Free
- 19 Maillifier FREE yesDOCS 5.8Free
- 20 OpenReply FREE yesDOCS 5.8Free
- 21 WPS AI Email Writer FREE yesDOCS 5.8Free
- 22 Xemail DOCS 5.6$5.83/mo
- 23 DraftKind DOCS 5.5
- 24 Remail FREE noDOCS 5.4$0.54/mo
- 25 SalesPort AI Email Writer DOCS 5.4
Compare all 25 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | Tone controls | Custom instructions |
|---|---|---|---|---|---|---|---|---|
| 1 | Flailo | 7.3 | Free plan | $29/mo | Yes | Yes | Yes | |
| 2 | ForthWrite | 7.3 | Free plan | $24/mo | Yes | Yes | Yes | |
| 3 | Lavender | 6.0 | Free plan | $27/mo | Yes | 27 /user/mo | ||
| 4 | WriteMail.ai | 6.0 | Free plan | $5/mo | Yes | Yes | ||
| 5 | AI Perfect Assistant | 5.9 | Free plan | $16.99/mo | Yes | 25.99 /user/mo | Yes | |
| 6 | Demi | 5.9 | Free plan | $25/mo | Yes | |||
| 7 | Ellie | 5.9 | Free plan | $19/mo | Yes | Yes | Yes | |
| 8 | GPT for Gmail | 5.9 | Free plan | $9/mo | Yes | Yes | ||
| 9 | Jetwriter AI | 5.9 | Free plan | $14/mo | Yes | Yes | Yes | |
| 10 | Kerna | 5.9 | Free plan | €12/mo | Yes | Yes | Yes | |
| 11 | MailMaestro | 5.9 | Free plan | $12/mo | Yes | 12 /user/mo | ||
| 12 | MailSome | 5.9 | Free plan | €8.25/mo | Yes | Yes | ||
| 13 | Mailyr | 5.9 | Free plan | $4.90/mo | Yes | Yes | ||
| 14 | ReplyCalm | 5.9 | Free plan | $9/mo | Yes | Yes | ||
| 15 | thread. | 5.9 | Free plan | Free | Yes | Yes | Yes | |
| 16 | Workforce AI Email Drafter | 5.9 | Free plan | $99/mo | Yes | 99 /user/mo | Yes | Yes |
| 17 | AI Email Assistant for Thunderbird | 5.8 | Free plan | Free | Yes | |||
| 18 | Composer AI | 5.8 | Free plan | Free | Yes | |||
| 19 | Maillifier | 5.8 | Free plan | Free | Yes | |||
| 20 | OpenReply | 5.8 | Free plan | Free | Yes | Yes | ||
| 21 | WPS AI Email Writer | 5.8 | Free plan | Free | Yes | |||
| 22 | Xemail | 5.6 | $5.83/mo | Yes | Yes | Yes | ||
| 23 | DraftKind | 5.5 | Yes | Yes | ||||
| 24 | Remail | 5.4 | No | $0.54/mo | No | 9 /user/mo | ||
| 25 | SalesPort AI Email Writer | 5.4 | Yes |
Is your platform on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.