Email & notification APIs
Tempo Checker
Detect disposable emails before they wreck your signups
- 0community votes
- 2DR by Ahrefs no change since last check
Ahrefs Domain Rating listed 6 Nov 2026, relisted 1 Nov 2026.
API service that detects disposable email addresses in real time with 99.7% accuracy and sub-50ms response times to protect signup and trial flows from fake
What it is
Tempo Checker: the homepage
Tempo Checker is an API service for SaaS teams that detects disposable email addresses in real time before account creation. It provides a verdict on domain legitimacy through three verification layers: domain list matching against 40M+ tracked domains, DNS/MX validation of mail server records, and an AI scraper agent that identifies new temporary email services. The service processes requests in under 50ms with 99.7% detection accuracy, catching over 1,200 new disposable domains per week. It returns confidence scores and reasons for each verdict, allowing teams to block, soft-warn, or approve signups as needed.
Listed capabilities
- 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
Pricing
Pricing model: Free trial
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.
Follow Tempo Checker for an email about each milestone, update and new product they post, in a daily summary.
Tempo Checker metrics
| Metric | Value |
|---|---|
| Domain Rating | 2 no change since last check |
| Trust Flow | 0 no change since last check |
| Citation Flow | 22 no change since last check |
| Referring domains | 19 no change since last check |
| External backlinks | 32 no change since last check |
Ahrefs Domain Rating listed 6 Nov 2026, relisted 1 Nov 2026. Majestic listed 1 Nov 2026, relisted 1 Nov 2026. Link data listed by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
Tempo Checker domain listing data
Show the listing data
| Domain age | 3 years |
|---|---|
| Registered | |
| Expires | |
| Registrar | Porkbun LLC |
| DNSSEC | Not signed |
Tempo Checker launch receipt entry
| Measure | At launch, then latest |
|---|---|
| Domain Rating (Ahrefs) | 2 to 2 no change since launch 1 Nov 2026, then 5 Nov 2026 |
| Trust Flow (Majestic) | 0 first measured 1 Nov 2026 |
| Referring domains (Majestic) | 19 first measured 1 Nov 2026 |
Day 4 since launch. Next receipt: day 30, 1 Dec 2026. We show what changed, not what caused it: many things affect these numbers. Nothing here is estimated.
Before you launch
The playbook on SaaS Directory List lists what to prepare, what to post on launch day and where else to list your product.
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Quick answers
How is this different from a blocklist I could get for free?
Free lists are outdated snapshots from their last publication date. Tempo Checker's scraper agent and DNS/MX validation layer catch domains that were created within the last few hours, not months.
Will this ever block a real customer?
Every verdict includes a confidence score and reason, so you decide whether to hard-block, soft-warn, or flag for review instead of enforcing an all-or-nothing rule.
How fast is the API in production?
The median response time is under 50ms, so it integrates comfortably into signup form validation without adding noticeable lag.
Do you store the emails I send you?
No. The service checks the domain in real time and stores only the domain name for analytics and caching, not the full email address.
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Tempo Checker has a free listing. The owner can unlock the full profile with a paid launch for $5:
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