Send-Box email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), Send-Box is the email service provider (ESP) for 117 domains — 0.02% of 637,420 SPF-publishing domains. Its strongest TLD is .ru (76.1% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-24 DNS snapshot.
What Send-Box represents in this dataset
Send-Box — Russian email marketing platform.
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 Send-Box
Across 17 distinct TLDs its top three are .ru (76.1%), .com (6.8%), .kz (5.1%) — together 88.0% of the 117 domains, which makes the footprint narrow — three TLDs cover most of it, which is typical of a regional or single-market operator. The service most often observed on the same domains is Mail.ru for Business (Mailbox, 44 domains, 37.6% of them), followed by Yandex 360 (22.2%). 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 Send-Box
What else the same 117 domains use — cross-tabulated from the same daily snapshot (2026-09-24).
| Type | Service | Domains | Share of Send-Box users |
|---|---|---|---|
| Mailbox | Mail.ru for Business | 44 | 37.6% |
| Mailbox | Yandex 360 | 26 | 22.2% |
| Mailbox | Self-Hosted | 24 | 20.5% |
| Mailbox | Google Workspace | 7 | 6.0% |
| Mailbox | Unknown / Other | 4 | 3.4% |
| Mailbox | Generic / unmatched (mx*.*) | 3 | 2.6% |
| ESP | Unisender (RU) | 38 | 32.5% |
| ESP | SendPulse | 13 | 11.1% |
| ESP | DashaMail (RU) | 13 | 11.1% |
| ESP | SMTP.BZ | 12 | 10.3% |
TLD distribution (top 17 of 17)
Frequently asked questions
How many domains use Send-Box?
117 domains in the Tranco top-1M use Send-Box as their email service provider (ESP) as of September 24, 2026, according to Live Direct Marketing's daily DNS scan.
What is Send-Box's market share?
Send-Box holds 0.02% 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 Send-Box?
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 117 domains.