Smtp99 is a temporary email provider
We have recorded 6 domain(s) routed through Smtp99's mail servers. Of those, 6 (100%) are classified disposable. Addresses on these domains are created for one-off use and abandoned, which for SaaS products and mailing lists means fake signups, free-trial abuse and bounces later.
6 domain(s), newest first.
| Domain | Added | Classification |
|---|---|---|
| zxcxc.com | Aug 3, 2026 | Disposable |
| vorga.org | Aug 2, 2026 | Disposable |
| tonymanso.com | Aug 2, 2026 | Disposable |
| smtp99.com | Aug 1, 2026 | Disposable |
| greggamel.com | Jul 31, 2026 | Disposable |
| 4dm.4dy.org | Jul 29, 2026 | Disposable |
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Blocking one provider is whack-a-mole — operators spin up new domains daily. The API scores every signup against the whole catalogue as it grows.
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