Slack vs Spark Mail
Which is better in 2026? Five scores, side by side.
Slack is the better app overall, scoring 8.6 to 8.2. Slack wins on 3 of the 5 scores, Spark Mail on 2.
Teams and companies that run their daily work through chat and integrations
Busy professionals who juggle several email accounts and want a calmer inbox
Score by score
The details
| Feature | Slack | Spark Mail |
|---|---|---|
| Category | Messaging & Calls | Messaging & Calls |
| Category rank | #4 of 8 | #7 of 8 |
| Developer | Salesforce | Readdle |
| Pricing | Free + paid plans | Free + paid plans |
| Usable for free | Yes | Yes |
| iPhone & iPad | ✓ | ✓ |
| Android | ✓ | ✓ |
| Mac | ✓ | ✓ |
| Windows | ✓ | ✓ |
| Linux | ✓ | — |
| Web | ✓ | — |
Strengths and weaknesses
Slack
- Fast, well-organized channels and threads
- Huge integration directory for dev and business tools
- Slack Connect shares channels with other companies
- Free plan only shows the last 90 days of messages
- Per-seat pricing gets expensive for growing teams
Slack is still the best place for teams to talk. Channels keep conversations organized, huddles start a quick call without a meeting link, and a deep app directory plus Workflow Builder take care of routine work. The catch is price: the free plan only shows the last 90 days of messages, and paid seats add up fast. Pick it if your team lives in chat all day.
Full Slack review
Spark Mail
- Smart Inbox cuts noise from newsletters and alerts
- Works with Gmail, Outlook, iCloud and IMAP accounts
- Clean, fast design on phone and desktop
- Account access is held on Spark's servers for features
- Best AI and team tools need Spark Premium
Spark Mail turns a messy inbox into something you can manage. Smart Inbox groups people, newsletters and notifications, Gatekeeper screens first-time senders, and you can snooze, pin or set aside emails with a tap. AI tools help draft replies. The catch is privacy: Spark keeps access to your accounts on its own servers to power push and other features. Great for busy people juggling several accounts.
Full Spark Mail review
