According to Live Direct Marketing's daily Tranco top-1M scan (July 12, 2026), UniSender is the email service provider (ESP) for 650 domains — 0.11% of 617,244 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
UniSender is a Russian email service provider offering bulk email, marketing automation, and transactional mail services. It serves primarily businesses within the Russian and post-Soviet markets.
In SPF records across the web, UniSender appears predominantly amongst smaller and mid-market organisations rather than global enterprises. Its footprint overlaps significantly with Yandex 360, suggesting that Russian businesses often adopt both services as part of their email infrastructure stack. For email operators and receivers, this means UniSender's reputation sits within a specific regional and organisational-size category distinct from Western-focused ESPs.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 11 | 1.7% |
| Top 100,000 | 112 | 17.2% |
| Top 1,000,000 | 461 | 70.9% |
| Unranked | 66 | 10.2% |
| TLD | Domains | Share | |
|---|---|---|---|
| .ru | 423 | 65.1% | |
| .com | 86 | 13.2% | |
| .by | 15 | 2.3% | |
| .pro | 10 | 1.5% | |
| .net | 10 | 1.5% | |
| .io | 7 | 1.1% | |
| .org | 7 | 1.1% | |
| .su | 4 | 0.6% | |
| .ai | 3 | 0.5% | |
| .xn--p1ai | 3 | 0.5% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 650 domains.
| Type | Service | Domains | Share of UniSender users |
|---|---|---|---|
| Mailbox | Yandex 360 | 271 | 41.7% |
| Mailbox | Self-Hosted | 128 | 19.7% |
| Mailbox | Mail.ru for Business | 57 | 8.8% |
| Mailbox | Google Workspace | 57 | 8.8% |
| Mailbox | Generic / unmatched (mx*.*) | 17 | 2.6% |
| Mailbox | Generic / unmatched (mail.*) | 15 | 2.3% |
| ESP | Unisender (RU) | 169 | 26.0% |
| ESP | UniOne | 54 | 8.3% |
| ESP | DashaMail (RU) | 54 | 8.3% |
| ESP | SendPulse | 54 | 8.3% |
UniSender frequently appears in SPF records alongside Yandex 360, Yandex's business email suite. This dual-provider pattern is specific to Russian and post-Soviet markets and reflects how organisations in the region consolidate email infrastructure. Mailbox providers with region-specific reputation models may evaluate mail from this stack using criteria distinct from those applied to standalone Western ESPs.
See the full UniSender data page (KPI cards, trend, sample domains) →
UniSender is used primarily by smaller and mid-market organisations in Russian and Russian-speaking regions. Test against it if your recipients are based in or operate within that geography; otherwise it has minimal relevance to your campaign's overall deliverability footprint.
650 domains in the Tranco top-1M use UniSender as their email service provider (ESP) as of July 12, 2026 (0.11% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
UniSender accounts for 0.11% 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's largest TLD is .ru (65.1% of its domains); it appears across 65 TLDs in total.