Shortwave alternatives: 5 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave Shortwave: gmail and Google Workspace only, and per-seat pricing is high for individuals. We ranked 5 alternatives by how directly each one replaces Shortwave, then by reviews, real visits and how recently each app's facts were checked against its own website. Superhuman Mail currently ranks first.

Quick comparison

#	App	Pricing	Open source	Platforms	Verified facts	Score
1	Spark	Free plan + paid	No	macOS, Windows, iOS +1	3 of 3	59.6

1. SparkTop pick
Best for: People and small teams who want one smart inbox across all their devices
Free plan + paidmacOS, Windows, iOS, Android
59.6
score / 100
Why switch from Shortwave
AI features and team inboxes with a free plan and any IMAP account.
Pros
Free plan with unlimited accounts and a smart inbox
Shared threads, private comments and joint drafting for teams
Native apps on Mac, Windows, iOS and Android
Cons
Mail syncs through Readdle's servers
Best AI and team features need a per-user subscription
No web app
Visit Spark Details and reviews
How this score is calculated
Editorial fit ×0.377
Reviews ×0.363
Clicks (90 days) ×0.150
Freshness ×0.1585
Votes ×0.150
0 counted reviews, 0 up and 0 down votes. Full formula
Is Spark a good Shortwave alternative?
Verified facts
3 of 3 verified
Free plan
Yes, unlimited email accounts
Checked Oct 25, 2026sparkmailapp.com(opens source in a new tab)
Plus price
$10 per user/month (monthly)
Checked Oct 25, 2026sparkmailapp.com(opens source in a new tab)
Pro price
$20 per user/month (monthly)
Checked Oct 25, 2026sparkmailapp.com(opens source in a new tab)

The best Shortwave alternative for…

The highest-ranked app in this list for each need.

Best Shortwave alternative for most people

Superhuman Mail

Similar premium AI inbox that also supports Outlook accounts.

Best Shortwave alternative for a free plan you can upgrade

Spark

AI features and team inboxes with a free plan and any IMAP account.

Best Shortwave alternative for Mac

Mimestream

A cheaper, native Mac client for Gmail without the heavy AI focus.

Best Shortwave alternative for Windows

HEY

A different way to tame the inbox, using a screener rather than AI.

Best Shortwave alternative for Linux

HEY

A different way to tame the inbox, using a screener rather than AI.

Best Shortwave alternative for iPhone and Android

Gmail

Gmail itself now includes Gemini summaries and drafting at no extra client cost.

Best Shortwave alternative for working in the browser

Superhuman Mail

Similar premium AI inbox that also supports Outlook accounts.

Shortwave alternatives: common questions

What is the best alternative to Shortwave?

Superhuman Mail ranks first right now. Similar premium AI inbox that also supports Outlook accounts. Mimestream and Spark follow it in our ranking.

Is there a free alternative to Shortwave?

Yes. Spark (free plan + paid) and Gmail (free plan + paid) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Shortwave?

None of the 5 alternatives in this list is open source.

Which Shortwave alternatives work on Linux?

HEY runs on Linux.

Why do people switch from Shortwave?

The complaints we hear most: gmail and Google Workspace only; per-seat pricing is high for individuals; relies heavily on AI processing of your mail.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Shortwave, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.