Best AI Email Assistants in 2026
Updated
AI email assistants can help with the recurring work of composing, sorting, and following up on messages. Compared on AI reply drafting, inbox triage, thread summaries, and follow-up actions, the options differ in which parts of that workflow they address. Email platform support matters for compatibility, while automatic sending indicates whether sending is among the listed capabilities. Free-plan availability and paid-from pricing help you assess cost. Perplexity, Drag, and Inbox Zero are among the tools shown; Mailbutler Smart Assistant and Spike are also included. Match the listed functions to the email tasks you want to streamline.
AI Email Assistants, one module each.A lit port is something its maker publishes; 6 of 6 with a known API signal have a public API.
- 01 Perplexity API yesFREE yesDOCS 7.4$20/mo
- 02 Fyxer API yesFREE yesDOCS 7.2$22.50/mo
- 03 MailFlow API yesFREE yesDOCS 7.1$12/mo
- 04 DispatchMail API yesDOCS 6.6
- 05 Drag API yesFREE noDOCS 6.6$12/mo
- 06 Inbox Zero API yesFREE noDOCS 6.6$20/mo
- 07 Mailbutler Smart Assistant FREE yesDOCS 5.9$7/mo
- 08 Spike FREE yesDOCS 5.9$4/mo
- 09 EmailAgent FREE yesDOCS 5.8Free
- 10 EmailOps FREE yesDOCS 5.8Free
- 11 Kerna FREE yesDOCS 5.8€12/mo
- 12 MailMaestro FREE yesDOCS 5.8$12/mo
- 13 MailWise FREE yesDOCS 5.8£15/mo
- 14 Metis Mail FREE yesDOCS 5.8$9.58/mo
- 15 Serif FREE yesDOCS 5.8$30/mo
- 16 Spark +AI FREE yesDOCS 5.8$10/mo
- 17 Demi FREE yesDOCS 5.7$25/mo
- 18 MailCopilot FREE yesDOCS 5.7Free
- 19 Maillifier FREE yesDOCS 5.7Free
- 20 Needle FREE yesDOCS 5.7Free
- 21 OpenMailBot FREE yesDOCS 5.7Free
- 22 Superhuman Go FREE yesDOCS 5.7$12/mo
- 23 thread. FREE yesDOCS 5.7Free
- 24 Replai FREE yesDOCS 5.6$6/mo
- 25 Mailtwine FREE yesDOCS 5.5
Compare all 25 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | Inbox triage | AI reply drafting |
|---|---|---|---|---|---|---|---|---|
| 1 | Perplexity | 7.4 | Free plan | $20/mo | Yes | |||
| 2 | Fyxer | 7.2 | Free plan | $22.50/mo | No | 22.5 /user/mo | ||
| 3 | MailFlow | 7.1 | Free plan | $12/mo | Yes | Yes | Yes | |
| 4 | DispatchMail | 6.6 | Yes | Yes | ||||
| 5 | Drag | 6.6 | No | $12/mo | No | 12 /user/mo | ||
| 6 | Inbox Zero | 6.6 | No | $20/mo | No | Yes | Yes | |
| 7 | Mailbutler Smart Assistant | 5.9 | Free plan | $7/mo | Yes | 4 /user/mo | Yes | Yes |
| 8 | Spike | 5.9 | Free plan | $4/mo | Yes | 4 /user/mo | ||
| 9 | EmailAgent | 5.8 | Free plan | Free | Yes | Yes | Yes | |
| 10 | EmailOps | 5.8 | Free plan | Free | Yes | Yes | Yes | |
| 11 | Kerna | 5.8 | Free plan | €12/mo | Yes | |||
| 12 | MailMaestro | 5.8 | Free plan | $12/mo | Yes | 12 /user/mo | Yes | Yes |
| 13 | MailWise | 5.8 | Free plan | £15/mo | Yes | Yes | Yes | |
| 14 | Metis Mail | 5.8 | Free plan | $9.58/mo | Yes | 12 /user/mo | ||
| 15 | Serif | 5.8 | Free plan | $30/mo | No | |||
| 16 | Spark +AI | 5.8 | Free plan | $10/mo | Yes | 10 /user/mo | Yes | Yes |
| 17 | Demi | 5.7 | Free plan | $25/mo | Yes | |||
| 18 | MailCopilot | 5.7 | Free plan | Free | Yes | |||
| 19 | Maillifier | 5.7 | Free plan | Free | Yes | Yes | Yes | |
| 20 | Needle | 5.7 | Free plan | Free | Yes | Yes | Yes | |
| 21 | OpenMailBot | 5.7 | Free plan | Free | Yes | Yes | Yes | |
| 22 | Superhuman Go | 5.7 | Free plan | $12/mo | Yes | |||
| 23 | thread. | 5.7 | Free plan | Free | Yes | |||
| 24 | Replai | 5.6 | Free plan | $6/mo | Yes | 6 /user/mo | Yes | Yes |
| 25 | Mailtwine | 5.5 | No | Yes | Yes |
Is your platform on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.