Number 1: 
Warmup Inbox
Email warmup service that improves deliverability and sender reputation
- Email & notification APIs
- Slovakia
- DR 62 no change since last check
Email & notification APIs · United States
VeriMails™
Email verification with real SMTP checks and catch-all detection
- Community votes
- 0
- DR by Ahrefs
- 13 no change since last check
- Started
- 2026
Ahrefs Domain Rating benchmarked 24 Oct 2026, rebuilt 24 Oct 2026.
VeriMails™ metrics
| Metric | Value |
|---|---|
| Domain Rating | 13 no change since last check |
| Trust Flow | 6 no change since last check |
| Citation Flow | 30 no change since last check |
| Referring domains | 90 no change since last check |
| External backlinks | 239 no change since last check |
Ahrefs Domain Rating benchmarked 24 Oct 2026, rebuilt 24 Oct 2026. Main build topic: Business/Energy (6). Majestic benchmarked 24 Oct 2026, rebuilt 24 Oct 2026. Link data built by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
VeriMails™ domain build sheet
| Domain age | 9 months |
|---|---|
| Registered | |
| Expires | |
| Registrar | Dynadot Inc |
| DNSSEC | Not signed |
VeriMails™ verifies email addresses using SMTP checks, catches invalid and risky addresses, and helps teams avoid bounces before sending campaigns.
What it is
VeriMails™ is an email verification platform that checks email addresses for deliverability before sending. It combines real-time SMTP handshakes with catch-all domain detection to identify valid, invalid, disposable, risky, and uncertain addresses. Teams use VeriMails™ to clean prospect lists before cold email campaigns, verify contacts in CRM systems, and maintain sender reputation by filtering out problematic addresses.
The platform offers a REST API for real-time verification in signup forms and workflows, bulk CSV upload for list cleaning, and an Email Finder tool to locate verified business emails. Verification results include syntax validation, MX record checks, DNS confirmation, SMTP responses, and detection of disposable mail, role-based addresses, and catch-all domains.
VeriMails™ operates on a credits system where credits never expire. Teams can verify emails one at a time, process bulk lists, or integrate verification into applications. Pricing starts from $0.0019 per email verification, with optional monthly subscription plans.
What it is built with
- Real-time SMTP verification checks mailbox existence on recipient mail servers
- Disposable and role-based email detection
- Email syntax validation and MX record checks
- Bulk CSV upload and processing with parallel verification
- REST API with single and batch endpoints for real-time integration
- Email Finder to locate verified business email addresses
- Non-expiring prepaid credits system
- Safe to Send flag indicating deliverability status
- Multiple verification layers for major email providers like Google, Microsoft, Yahoo
Pricing
Pricing model: Freemium
100 free credits on signup. Prepaid credits from $19 for 10,000 verifications ($0.0019 per email). Monthly subscription plans: Starter $15/month (10,000 verifications/month), Pro $39/month (50,000/month), Business $69/month (100,000/month), Scale $150/month (500,000/month), Agency $300/month (1,500,
Compare and explore
Questions from the bench
- What does Safe to Send mean?
- Each result includes a Safe to Send flag. An address is marked safe when verification confirms the mailbox exists and is deliverable. Invalid, disposable, catch-all, and unverifiable addresses are flagged as not safe to send.
- Do credits expire?
- No. Credits never expire. Buy them when you need them and use them at your own pace with no subscriptions, no monthly minimums, and no recurring charges.
- How fast is verification?
- Most single verifications complete in 1 to 3 seconds depending on the mail server response time. Bulk CSV jobs run in parallel, and a list of 10,000 emails typically finishes in 20 to 40 minutes.
- What file formats does bulk upload support?
- Bulk upload supports CSV files with an email column header, or emails in the first column. All original columns are preserved in the output file alongside the verification results.
- How does VeriMails™ verify email addresses?
- VeriMails™ connects directly to the recipient mail server via SMTP and checks whether the mailbox exists. For domains with catch-all configurations, VeriMails™ detects the catch-all and flags it clearly.
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