Mimestream is a great native Gmail app, but it's Gmail only, has no AI and renews every year. Here's what else to consider.
Quick picks- Dusk: Keyboard-first Mac mail app that sorts and sums up every email with the AI on your Mac. Paid once.
- Superhuman: The original fast, keyboard-first mail app, on every platform. A subscription with cloud AI.
- Spark: A capable free mail app on every platform, with AI on paid plans.
At a glance
| App | AI stays on your Mac | AI included | Pay once | Cost over 3 years | Accounts |
|---|
| Dusk | ✓ Yes, always | ✓ Yes | ✓ Yes | $49 | Gmail, Google Workspace, iCloud |
|---|
| Superhuman | ✗ No, cloud | ✓ Yes, in the subscription | ✗ No | $900 to $1,080 | Gmail, Google Workspace, Microsoft 365, Outlook |
|---|
| Spark | ✗ No, cloud (Azure OpenAI) | ✗ Paid plans only | ✗ No | $360 with AI (Plus, yearly) | Any |
|---|
| Apple Mail | ✓ Mostly (can use Private Cloud Compute) | ✓ Yes, free | ✓ Free | $0 | Any (iCloud, Gmail, Outlook, IMAP) |
|---|
-
1Dusk Ours
$49 once (launch price)Gmail, Google Workspace, iCloudAI: On your Mac only (Apple's on-device model)
Why it's here: Also native and fast, with AI sorting and summaries on your Mac, iCloud support, and a one-time price.
-
2Superhuman
Starter $30 a month, or $300 a year. Business $40 a month, or $396 a yearGmail, Google Workspace, Microsoft 365, OutlookAI: In the cloud
Why it's here: Keyboard-first with cloud AI, on every platform, at $30 a month. Dusk vs Superhuman
-
3Spark
Free. Plus $10 a month ($8.25 billed yearly). Pro $20 a monthAnyAI: In the cloud (Azure OpenAI)
Why it's here: Free, any account, on every platform. Dusk vs Spark
-
4Apple Mail
FreeAny (iCloud, Gmail, Outlook, IMAP)AI: On your Mac, or Apple's Private Cloud Compute
Why it's here: Free, any account, with Apple Intelligence. Dusk vs Apple Mail
Private and quick by design
- 12 MB
- download
- 0.46 s
- to open
- 65 MB
- of memory
- 0.9 s
- to sort and sum up an email
- No Dusk server between you and your mail. Dusk talks to Google and iCloud directly from your Mac, and there's no analytics.
- AI with no cloud fallback. Sorting, summaries and drafts use only Apple's on-device model, and still work offline.
- Tracking blocked. Emails are shown with scripts off and every remote image and tracker blocked, so senders can't see when you open them.
- Phishing set aside. A stranger's urgent email linking to a different site goes to Screened, not your inbox.
- Safe sending. Undo send, reply all only when you choose it, and a failed send is never resent blindly.
- Your keys stay yours. Sign-ins are stored in the macOS Keychain, and your licence is checked on your Mac.
Measured on a pre-release build on a MacBook Pro with M3 Max: zipped universal download, warm launch, idle memory with example mail, and triage of one email. Older Macs are slower.
We make Dusk, so we've put it where it fits the question and said plainly who each other app suits better.
Questions
- Is there a one-time purchase alternative to Mimestream?
- Yes. Dusk is $49 once and supports Gmail, Google Workspace and iCloud.
- Which Mimestream alternative has AI?
- Dusk (on your Mac), Superhuman and Spark (in the cloud), and Apple Mail (Apple Intelligence).
Sources
Checked September 2026. Prices change, so check each maker's site before you buy.
Fast, private email for $49 once
Pre-orders are open at the launch price. One payment covers the Mac app and the AI, and the iPhone app when it arrives.
Pre-order Dusk