Best AI Email Assistants in 2026
Updated
AI email assistants can help with drafting, sorting, and keeping track of conversations. Compare Mailbutler Smart Assistant, Perplexity, and Spike on reply drafting, inbox triage, thread summaries, and follow-up actions to see which parts of your email routine they address. Email platform support is a practical compatibility check; automatic sending indicates whether a tool can take that step without a manual send. Free-plan availability and paid-from pricing add cost considerations. Match the listed capabilities to the work you want help with and the email platform you use.
22 of 22 with known pricing have a free tier;0 apps show full bars: free, open, on most devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | Mailbutler Smart AssistantWeb · Windows · Mac · Linux · Android · iPhone · Extension | Three bars | 6 of 6 | $7/mo | 6.8 | ||
| 2 | PerplexityWeb · Windows · Mac · Android · iPhone · API | Three bars | 5 of 6 | Free | 6.8 | ||
| 3 | SpikeWeb · Windows · Mac · Android · iPhone | Three bars | 5 of 6 | $4/mo | 6.7 | ||
| 4 | Superhuman GoWeb · Windows · Mac · Android · iPhone · Extension | Three bars | 5 of 6 | $12/mo | 6.6 | ||
| 5 | MailtwineWeb · Windows · Mac · Linux · Android · iPhone | Two bars | 6 of 6 | 6.5 | |||
| 6 | OpenMailBotWeb · Windows · Mac · Linux · Self-hosted | Three bars | 4 of 6 | Free | 6.5 | ||
| 7 | SerifWeb · Windows · Mac · iPhone | Three bars | 4 of 6 | $30/mo | 6.5 | ||
| 8 | Spark +AIWindows · Mac · Android · iPhone | Three bars | 4 of 6 | $10/mo | 6.5 | ||
| 9 | EmailOpsWindows · Mac · Linux | Three bars | 3 of 6 | Free | 6.4 | ||
| 10 | FyxerWeb · iPhone · API | Two bars | 2 of 6 | $22.50/mo | 6.4 | ||
| 11 | KernaWeb · Windows · Mac | Three bars | 3 of 6 | €12/mo | 6.4 | ||
| 12 | MailCopilotWindows · Mac · Linux | Three bars | 3 of 6 | Free | 6.4 | ||
| 13 | DemiMac | Two bars | 1 of 6 | $25/mo | 6.3 | ||
| 14 | EmailAgentWeb | Two bars | 1 of 6 | Free | 6.3 | ||
| 15 | MailFlowWeb · Self-hosted · API | Two bars | 1 of 6 | $12/mo | 6.3 | ||
| 16 | MaillifierWeb · Self-hosted | Two bars | 1 of 6 | Free | 6.3 | ||
| 17 | MailMaestroWeb · Extension | Two bars | 1 of 6 | $12/mo | 6.3 | ||
| 18 | MailWiseWeb | Two bars | 1 of 6 | £15/mo | 6.3 | ||
| 19 | Metis MailWeb · Self-hosted | Two bars | 1 of 6 | $9.58/mo | 6.3 | ||
| 20 | NeedleWeb | Two bars | 1 of 6 | Free | 6.3 | ||
| 21 | ReplaiWeb | Two bars | 1 of 6 | $6/mo | 6.2 | ||
| 22 | thread.Extension | Two bars | 0 of 6 | Free | 6.2 | ||
| 23 | ShortwaveWeb · Windows · Mac · Android · iPhone | Two bars | 5 of 6 | $30/mo | 5.6 | ||
| 24 | MayleeWeb · Windows · Mac · Android · iPhone | One bar | 5 of 6 | $17/mo | 5.5 | ||
| 25 | EllieWeb · Windows · Extension | One bar | 2 of 6 | 5.4 |
Compare all 25 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Inbox triage | AI reply drafting |
|---|---|---|---|---|---|---|---|---|
| 1 | Mailbutler Smart Assistant | 6.8 | Free plan | $7/mo | Yes | 4 /user/mo | Yes | Yes |
| 2 | Perplexity | 6.8 | Free plan | Yes | ||||
| 3 | Spike | 6.7 | Free plan | $4/mo | Yes | 4 /user/mo | ||
| 4 | Superhuman Go | 6.6 | Free plan | $12/mo | Yes | |||
| 5 | Mailtwine | 6.5 | No | Yes | Yes | |||
| 6 | OpenMailBot | 6.5 | Free plan | Free | Yes | Yes | Yes | |
| 7 | Serif | 6.5 | Free plan | $30/mo | No | |||
| 8 | Spark +AI | 6.5 | Free plan | $10/mo | Yes | 10 /user/mo | Yes | Yes |
| 9 | EmailOps | 6.4 | Free plan | Free | Yes | Yes | Yes | |
| 10 | Fyxer | 6.4 | Free plan | $22.50/mo | No | 22.5 /user/mo | ||
| 11 | Kerna | 6.4 | Free plan | €12/mo | Yes | |||
| 12 | MailCopilot | 6.4 | Free plan | Free | Yes | |||
| 13 | Demi | 6.3 | Free plan | $25/mo | Yes | |||
| 14 | EmailAgent | 6.3 | Free plan | Free | Yes | Yes | Yes | |
| 15 | MailFlow | 6.3 | Free plan | $12/mo | Yes | Yes | Yes | |
| 16 | Maillifier | 6.3 | Free plan | Free | Yes | Yes | Yes | |
| 17 | MailMaestro | 6.3 | Free plan | $12/mo | Yes | 12 /user/mo | Yes | Yes |
| 18 | MailWise | 6.3 | Free plan | £15/mo | Yes | Yes | Yes | |
| 19 | Metis Mail | 6.3 | Free plan | $9.58/mo | Yes | 12 /user/mo | ||
| 20 | Needle | 6.3 | Free plan | Free | Yes | Yes | Yes | |
| 21 | Replai | 6.2 | Free plan | $6/mo | Yes | 6 /user/mo | Yes | Yes |
| 22 | thread. | 6.2 | Free plan | Free | Yes | |||
| 23 | Shortwave | 5.6 | $30/mo | Yes | 30 /user/mo | |||
| 24 | Maylee | 5.5 | $17/mo | Yes | Yes | |||
| 25 | Ellie | 5.4 | Yes | Yes | Yes |
Is your app on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.