UniOne email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), UniOne is the email service provider (ESP) for 308 domains — 0.05% of 637,420 SPF-publishing domains. Its strongest TLD is .ru (44.5% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-24 DNS snapshot.
What UniOne represents in this dataset
UniOne (UniSender) — Russian transactional email API.
Directory category: Esp. The classification comes from include: mechanisms in the SPF record. It describes observed DNS infrastructure, not a commercial relationship and not the placement of any individual message.
What the 2026-09-24 snapshot shows about UniOne
Across 51 distinct TLDs its top three are .ru (44.5%), .com (19.2%), .ua (6.2%) — together 69.8% of the 308 domains, which makes the footprint moderately concentrated, with a recognisable home market. The service most often observed on the same domains is Yandex 360 (Mailbox, 74 domains, 24.0% of them), followed by Self-Hosted (21.1%). Directly comparable by the same detection rule: Amazon SES, SendGrid (Twilio), Mailgun. Ranking between them reflects what is published in DNS, not delivery quality or volume sent. All figures come from a single daily DNS snapshot (2026-09-24); a domain appears here when its published records match the include: mechanisms in the SPF record rule, which is an infrastructure fact, not a commercial relationship.
Commonly used together with UniOne
What else the same 308 domains use — cross-tabulated from the same daily snapshot (2026-09-24).
| Type | Service | Domains | Share of UniOne users |
|---|---|---|---|
| Mailbox | Yandex 360 | 74 | 24.0% |
| Mailbox | Self-Hosted | 65 | 21.1% |
| Mailbox | Google Workspace | 63 | 20.5% |
| Mailbox | Mail.ru for Business | 28 | 9.1% |
| Mailbox | Microsoft 365 | 17 | 5.5% |
| Mailbox | Generic / unmatched (mail.*) | 10 | 3.2% |
| ESP | Unisender (RU) | 113 | 36.7% |
| ESP | UniSender | 55 | 17.9% |
| ESP | SendPulse | 23 | 7.5% |
| ESP | Mailgun | 18 | 5.8% |
TLD distribution (top 30 of 51)
Frequently asked questions
How many domains use UniOne?
308 domains in the Tranco top-1M use UniOne as their email service provider (ESP) as of September 24, 2026, according to Live Direct Marketing's daily DNS scan.
What is UniOne's market share?
UniOne holds 0.05% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-09-24). The number is recomputed every day.
What are the biggest alternatives to UniOne?
The largest email service provider (ESP)s in the same category by Tranco top-1M share are: Amazon SES, SendGrid (Twilio), Mailgun, Zendesk, Mailchimp (as of 2026-09-24).
Largest email service provider (ESP)s in this category
Amazon SES (6.23%) · SendGrid (Twilio) (4.68%) · Mailgun (4.01%) · Zendesk (3.77%) · Mailchimp (3.61%) · Mandrill (3.26%) · HubSpot (3.18%) · Salesforce (2.57%) · Mailjet (Sinch) (2.14%) · Cloudflare Email Routing (1.96%)
Domain sample (top 100 by Tranco rank)
Showing 100 of 308 domains.