According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Unisender (RU) is the email service provider (ESP) for 3,527 domains — 0.57% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Unisender is a Russian email service provider serving marketers and transactional senders across the Russian-speaking market. The platform enables bulk email, automation, and analytics for small to mid-market organisations, primarily in the .ru space and its diaspora.
Unisender's SPF footprint sits predominantly in the long tail of smaller websites rather than major international brands. Its presence is most often observed alongside Yandex 360, reflecting a pattern of Russian senders delegating mail to local infrastructure specialists. The service has contracted in recent years, which matters for anyone auditing SPF records or investigating sender authentication patterns in the region.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 8 | 0.2% |
| Top 10,000 | 42 | 1.2% |
| Top 100,000 | 503 | 14.3% |
| Top 1,000,000 | 2,694 | 76.4% |
| Unranked | 280 | 7.9% |
| TLD | Domains | Share | |
|---|---|---|---|
| .ru | 2,429 | 68.9% | |
| .com | 413 | 11.7% | |
| .by | 89 | 2.5% | |
| .kz | 42 | 1.2% | |
| .pro | 42 | 1.2% | |
| .io | 41 | 1.2% | |
| .net | 34 | 1.0% | |
| .su | 28 | 0.8% | |
| .ua | 27 | 0.8% | |
| .online | 26 | 0.7% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 3,527 domains.
| Type | Service | Domains | Share of Unisender (RU) users |
|---|---|---|---|
| Mailbox | Yandex 360 | 1,064 | 30.2% |
| Mailbox | Self-Hosted | 966 | 27.4% |
| Mailbox | Mail.ru for Business | 388 | 11.0% |
| Mailbox | Google Workspace | 358 | 10.2% |
| Mailbox | Unknown / Other | 168 | 4.8% |
| Mailbox | Generic / unmatched (mx*.*) | 139 | 3.9% |
| ESP | SendPulse | 326 | 9.2% |
| ESP | UniSender | 162 | 4.6% |
| ESP | Sendsay | 153 | 4.3% |
| ESP | DashaMail (RU) | 150 | 4.3% |
Unisender's appearance in an SPF record typically signals that a sender has delegated mail to a Russian ESP, often in tandem with other regional services. Because the platform concentrates in smaller and mid-market segments of the .ru ecosystem rather than enterprises or global brands, its presence is a weak signal of sender scale. Its co-occurrence with Yandex 360 in SPF configurations suggests deliberate choices by senders to use local infrastructure for compliance, latency, or regulatory reasons specific to the Russian market.
See the full Unisender (RU) data page (KPI cards, trend, sample domains) →
If your audience is primarily Russian or Russian-speaking, including Unisender in a regional deliverability audit is worthwhile. For senders testing global reach, Unisender is lower priority than other ESPs given its concentration in smaller sites and recent share decline.
3,527 domains in the Tranco top-1M use Unisender (RU) as their email service provider (ESP) as of July 13, 2026 (0.57% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Unisender (RU) accounts for 0.57% 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.
Unisender (RU) is declining — its share moved -0.02 pp over the last 30 days (as of July 13, 2026).
Unisender (RU)'s largest TLD is .ru (68.9% of its domains); it appears across 133 TLDs in total.