Best Spark +AI Alternatives in 2026
Updated
20 apps from AI email assistants ranked against Spark +AI on the same published basis.
- 2Spark +AI vs Mailbutler Smart Assistant
- 3Spark +AI vs Superhuman Go
- 4Spark +AI vs MorningZero
- 5Spark +AI vs Missive
- 6Spark +AI vs EmailOps
- 7Spark +AI vs Inbox Zero
- 8Spark +AI vs Shortwave
- 9Spark +AI vs MailMaestro
- 10Spark +AI vs Superhuman Mail
- 11Spark +AI vs Metis Mail
- 12Spark +AI vs Quell
- 13Spark +AI vs Kai
- 14Spark +AI vs MailCopilot
- 15Spark +AI vs OpenMailBot
- 16Spark +AI vs Syncro
- 17Spark +AI vs MailWise
- 18Spark +AI vs Fyxer
- 19Spark +AI vs Ellie
- 20Spark +AI vs EmailAgent
- 21Spark +AI vs MailFlow
Spark +AI alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 2 | Mailbutler Smart Assistant | 9.6 | Free plan | $7/mo | Android, Browser, iOS, Linux, Mac, Web, Windows |
| 3 | Superhuman Go | 9.4 | Free plan | $12/mo | Android, Browser, iOS, Mac, Web, Windows |
| 4 | MorningZero | 8.5 | No | $15/mo | Android, Linux, Mac, Web, Windows |
| 5 | Missive | 8.4 | No | $14/mo | Web, Windows, Mac, iOS, Android |
| 6 | EmailOps | 8.0 | Free plan | Free | Linux, Mac, Windows |
| 7 | Inbox Zero | 8.0 | No | $20/mo | Android, API, Browser, iOS, self-hosted, Web |
| 8 | Shortwave | 8.0 | No | $30/mo | Android, iOS, Mac, Web, Windows |
| 9 | MailMaestro | 7.7 | Free plan | $12/mo | Browser, Web |
| 10 | Superhuman Mail | 7.6 | No | $2.08/mo | Web, Windows, Mac, iOS, Android |
| 11 | Metis Mail | 7.0 | Free plan | $12/mo | Web |
| 12 | Quell | 6.9 | No | — | Web, Android |
| 13 | Kai | 6.7 | No | $20/mo | Android, iOS, Mac, Web |
| 14 | MailCopilot | 6.6 | No | — | Linux, Windows, Mac |
| 15 | OpenMailBot | 6.4 | No | — | Web, Windows, Mac, Linux |
| 16 | Syncro | 6.4 | No | $8/mo | Web |
| 17 | MailWise | 6.0 | Free plan | £15/mo | Web |
| 18 | Fyxer | 5.8 | No | $22.50/mo | Web |
| 19 | Ellie | 5.7 | No | — | Web, Windows |
| 20 | EmailAgent | 5.6 | No | — | — |
| 21 | MailFlow | 5.5 | No | — | Web |
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Questions about Spark +AI alternatives
What is the best alternative to Spark +AI?
Mailbutler Smart Assistant, number 2 in AI email assistants with a score of 9.6 out of 10. The others here: Superhuman Go, MorningZero, Missive and 16 more.
What is the best free alternative to Spark +AI?
Mailbutler Smart Assistant is the best-ranked alternative with a free plan. 6 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation.