Mailwell vs Tempo Checker
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Mailwell compared with Tempo Checker
| Detail | 
Mailwell | 
Tempo Checker |
|---|
| What it does | A calm, fast mail app for Mac
| Detect disposable emails before they wreck your signups
|
|---|
| Stage | Startup
| Not given
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| Founded | 2026
| Not given
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| Based in | US
| Not given
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| Pricing model | Free trial
| Free trial
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| Pricing | Monthly: $5 USD; Yearly: $49 USD; Founder Lifetime (first 50): $59 USD (valid until December 31, 2026); then $129 USD
| Starter $9.99/mo (750 calls/mo), Growth $14.99/mo (2,000 calls/mo), Scale $24.99/mo (6,000 calls/mo). Free 7-day trial available.
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| Key features | - Unified inbox for multiple accounts
- Multiple reading pane options (Slide In, Side by Side, Full Window)
- Inbox tabs for every account (Primary, Social, Promos, Updates)
- Keyboard shortcuts and command palette
- Saved replies and snippets
- Snooze and quick actions
- Rules for sorting mail
- Send and Archive in one step
- Undo Send and Send Later
- Optional AI with Apple Intelligence or custom API key
| - DNS and MX validation
- AI scraper agent for new domain detection
- Sub-50ms response times
- Catches 1,200+ new domains per week
- Confidence scores and detailed reasons for verdicts
- Soft warning and hard block options
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| What makes it different | - Mail stays on your Mac with no Mailwell servers in between
- No tracking or analytics, private by design
- Support for JMAP protocol with native integration
- Works with any IMAP or JMAP account, not just popular providers
- Lifetime license option for early adopters
| - Real-time updates catch new domains within hours, not months
- Simple one-request API integration
- 99.7% detection accuracy
- No email address storage, privacy-first architecture
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 3 ▼ −1 (down) since last check | 2 ● no change since last check |
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| Trust Flow (Majestic) | 5 | 0 |
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| Citation Flow (Majestic) | 18 | 22 |
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| Referring domains (Majestic) | 12 | 19 |
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5 details filled in for both companies.
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