According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), UniOne is the email service provider (ESP) for 299 domains — 0.05% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
UniOne is a Russian email service provider serving transactional and marketing email delivery for smaller to mid-sized websites. It sits within the broader Yandex email infrastructure ecosystem and is primarily used by regional operators rather than global enterprises.
Its presence in SPF include records across the top-1M web indicates adoption concentrated in the long tail of smaller sites, predominantly across Russian-speaking markets and .ru domains, frequently deployed alongside Yandex 360. This pattern signals a regional authentication and routing choice rather than a globally distributed platform, with direct deliverability relevance mainly to senders targeting or hosted in Russian and Eastern European zones.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 7 | 2.3% |
| Top 100,000 | 48 | 16.1% |
| Top 1,000,000 | 215 | 71.9% |
| Unranked | 29 | 9.7% |
| TLD | Domains | Share | |
|---|---|---|---|
| .ru | 123 | 41.1% | |
| .com | 60 | 20.1% | |
| .ua | 18 | 6.0% | |
| .org | 8 | 2.7% | |
| .by | 7 | 2.3% | |
| .com.ua | 7 | 2.3% | |
| .io | 7 | 2.3% | |
| .online | 6 | 2.0% | |
| .net | 6 | 2.0% | |
| .bet | 4 | 1.3% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 299 domains.
| Type | Service | Domains | Share of UniOne users |
|---|---|---|---|
| Mailbox | Yandex 360 | 75 | 25.1% |
| Mailbox | Google Workspace | 62 | 20.7% |
| Mailbox | Self-Hosted | 59 | 19.7% |
| Mailbox | Mail.ru for Business | 23 | 7.7% |
| Mailbox | Microsoft 365 | 18 | 6.0% |
| Mailbox | Generic / unmatched (mail.*) | 9 | 3.0% |
| ESP | Unisender (RU) | 110 | 36.8% |
| ESP | UniSender | 52 | 17.4% |
| ESP | SendPulse | 26 | 8.7% |
| ESP | Elastic Email | 17 | 5.7% |
UniOne's SPF include mechanisms are typically embedded within Yandex's broader mail infrastructure, meaning adoption of UniOne often couples a sender's authentication stack to that regional system. For senders dispatching email to Russian-speaking recipients, understanding UniOne's reputation and SPF footprint is relevant to authentication audit and endpoint recognition; for operations outside these geographic zones, it remains a peripheral infrastructure detail.
See the full UniOne data page (KPI cards, trend, sample domains) →
UniOne's relevance to deliverability testing depends on your recipient geography. If you send primarily to Russian-speaking or .ru-domain subscribers, understanding UniOne's authentication and routing is important; for global or non-Eastern-European audiences, it remains a secondary consideration.
299 domains in the Tranco top-1M use UniOne as their email service provider (ESP) as of July 13, 2026 (0.05% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
UniOne accounts for 0.05% of SPF-publishing domains in the top 1M. Whether you should seed a test mailbox there depends on how much of your audience it represents — the co-usage table above shows the services it appears alongside most.
UniOne's largest TLD is .ru (41.1% of its domains); it appears across 51 TLDs in total.