According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Theeml (RU-CENTER) is the email service provider (ESP) for 55 domains — 0.01% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Theeml is an email service provider operated by RU-CENTER, serving smaller and mid-market organisations primarily in the Russian domain space with mail hosting and sending infrastructure.
Theeml's presence in smaller sites' SPF records reflects its positioning as a regional ESP rather than a major global platform. Its frequent pairing with Yandex 360 in sender authentication records suggests these platforms are chosen together by organisations operating in Russian and post-Soviet markets; for email practitioners, this means Theeml's sender reputation is shaped by a narrower, regionally concentrated base than international ESPs.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 10 | 18.2% |
| Top 1,000,000 | 41 | 74.5% |
| Unranked | 4 | 7.3% |
| TLD | Domains | Share | |
|---|---|---|---|
| .ru | 36 | 65.5% | |
| .com | 10 | 18.2% | |
| .kz | 2 | 3.6% | |
| .place | 1 | 1.8% | |
| .run | 1 | 1.8% | |
| .expert | 1 | 1.8% | |
| .capital | 1 | 1.8% | |
| .tv | 1 | 1.8% | |
| .ua | 1 | 1.8% | |
| .org | 1 | 1.8% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 55 domains.
| Type | Service | Domains | Share of Theeml (RU-CENTER) users |
|---|---|---|---|
| Mailbox | Yandex 360 | 16 | 29.1% |
| Mailbox | Self-Hosted | 13 | 23.6% |
| Mailbox | Mail.ru for Business | 10 | 18.2% |
| Mailbox | Google Workspace | 7 | 12.7% |
| Mailbox | Generic / unmatched (mx*.*) | 4 | 7.3% |
| Mailbox | Generic / unmatched (mail.*) | 2 | 3.6% |
| ESP | Unisender (RU) | 47 | 85.5% |
| ESP | Mailgun | 6 | 10.9% |
| ESP | SendPulse | 3 | 5.5% |
| ESP | DashaMail (RU) | 3 | 5.5% |
Theeml's visibility through SPF include mechanisms reflects its concentration among smaller, regional organisations rather than enterprise or consumer-facing brands. The prevalence of Theeml alongside Yandex 360 in the same SPF records indicates these platforms are often chosen together by organisations targeting or operating within Russian-speaking markets. From a deliverability perspective, this clustering means Theeml's sender reputation is shaped by a narrower, more geographically and linguistically specific sender base than global ESPs, which can make inbox placement more predictable for regional mailers but less relevant for campaigns aimed elsewhere.
See the full Theeml (RU-CENTER) data page (KPI cards, trend, sample domains) →
Theeml is an email service provider operated by RU-CENTER, focused on mail hosting and sending infrastructure for smaller organisations, particularly in the Russian domain space. It frequently appears alongside Yandex 360 in sender authentication records.
55 domains in the Tranco top-1M use Theeml (RU-CENTER) as their email service provider (ESP) as of July 13, 2026 (0.01% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Theeml (RU-CENTER) accounts for 0.01% 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.
Theeml (RU-CENTER)'s largest TLD is .ru (65.5% of its domains); it appears across 10 TLDs in total.