RUSSELL INTELLIGENCE
First-party verification intelligence.
Anonymous statistics learned only from verifications performed by this installation. Evidence quality never replaces conclusive mailbox evidence.
Verifications5396
SMTP success21.0%
Unknown30.9%
Catch-all35.2%
Disposable0.0%
Role addresses0.2%
Average verification2637.2 ms
Average SMTP2210.1 ms
Top mail providers
| Provider | Domains | Checks | Timeouts |
|---|
| Microsoft 365 | 840 | 1789 | 2 |
| Google Workspace | 646 | 1558 | 0 |
| Custom SMTP | 490 | 1496 | 57 |
| Unknown | 75 | 302 | 0 |
| Proofpoint | 50 | 118 | 0 |
| Mimecast | 15 | 51 | 0 |
| Zoho | 17 | 39 | 0 |
| Barracuda | 17 | 33 | 0 |
| Fastmail | 4 | 6 | 0 |
| Cisco | 2 | 4 | 0 |
Most verified domains
| Domain | Provider | Checks | Confidence |
|---|
| gmail.com | Google Workspace | 123 | 99.5% |
| sd49.bc.ca | Microsoft 365 | 28 | 46.0% |
| hotmail.com | Microsoft 365 | 26 | 99.6% |
| yahoo.com | Custom SMTP | 22 | 77.0% |
| unitek-industrie-elektronik.de | Custom SMTP | 21 | 45.4% |
| formedica.com | Microsoft 365 | 21 | 46.0% |
| enpublishingrpg.com | Custom SMTP | 21 | 63.7% |
| bretz-hufer.de | Custom SMTP | 21 | 64.0% |
| mecotec.net | Microsoft 365 | 16 | 49.4% |
| avive.ca | Unknown | 15 | 59.4% |
Historical growth
| Date | New anonymous histories |
|---|
| Oct. 8, 2026 | 1768 |
| Oct. 9, 2026 | 163 |
| Oct. 10, 2026 | 5 |
| Oct. 11, 2026 | 103 |
| Oct. 12, 2026 | 600 |
| Oct. 13, 2026 | 237 |
| Oct. 14, 2026 | 19 |
| Oct. 15, 2026 | 1869 |
| Oct. 16, 2026 | 24 |