Unisender (RU) email service provider (ESP)
According to Live Direct Marketing's daily Tranco top-1M scan (September 11, 2026), Unisender (RU) is the email service provider (ESP) for 3,679 domains — 0.58% of 631,089 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 3,679 domains in the Tranco top-1M use Unisender (RU) (0.58% of SPF-publishing domains).
- Snapshot date: 2026-09-11 — recomputed every day.
- 30-day share change: +0.01 pp.
- Strongest TLD: .ru (69.0% of its domains).
- Most co-used service: Yandex 360.
- Directory category: email service provider.
Why Unisender (RU) appears in this category
Unisender — Russian email and SMS marketing platform, one of the most popular ESPs in the RU/CIS market.
We classify it as a email service provider from include: mechanisms in the SPF record matching a maintained provider rule. This is infrastructure attribution from public DNS, not evidence of a direct contract or exclusive use.
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.
Where Unisender (RU) sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 6 | 0.2% |
| Top 10,000 | 42 | 1.1% |
| Top 100,000 | 459 | 12.5% |
| Top 1,000,000 | 3,151 | 85.6% |
| Unranked | 21 | 0.6% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .ru | 2,540 | 69.0% | |
| .com | 422 | 11.5% | |
| .by | 90 | 2.4% | |
| .pro | 44 | 1.2% | |
| .io | 41 | 1.1% | |
| .kz | 38 | 1.0% | |
| .net | 34 | 0.9% | |
| .su | 30 | 0.8% | |
| .ua | 29 | 0.8% | |
| .org | 28 | 0.8% |
What Unisender (RU) users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 3,679 domains.
| Type | Service | Domains | Share of Unisender (RU) users |
|---|---|---|---|
| Mailbox | Yandex 360 | 1,119 | 30.4% |
| Mailbox | Self-Hosted | 1,000 | 27.2% |
| Mailbox | Mail.ru for Business | 411 | 11.2% |
| Mailbox | Google Workspace | 370 | 10.1% |
| Mailbox | Unknown / Other | 167 | 4.5% |
| Mailbox | Generic / unmatched (mx*.*) | 139 | 3.8% |
| ESP | SendPulse | 326 | 8.9% |
| ESP | UniSender | 169 | 4.6% |
| ESP | Sendsay | 166 | 4.5% |
| ESP | DashaMail (RU) | 151 | 4.1% |
Unisender's role in Russian sender authentication
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) →
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Frequently asked questions
Should I test email deliverability against Unisender-backed senders?
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.
How many domains use Unisender (RU)?
3,679 domains in the Tranco top-1M use Unisender (RU) as their email service provider (ESP) as of September 11, 2026 (0.58% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is Unisender (RU) common enough to affect email deliverability testing?
Unisender (RU) accounts for 0.58% 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.
Is Unisender (RU) growing or declining?
Unisender (RU) is growing — its share moved +0.01 pp over the last 30 days (as of September 11, 2026).
Which countries or TLDs use Unisender (RU) most?
Unisender (RU)'s largest TLD is .ru (69.0% of its domains); it appears across 133 TLDs in total.