esp
According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Send-Box is the email service provider (ESP) for 119 domains — 0.02% of 617,702 SPF-publishing domains. Its strongest TLD is .ru (73.1% of its domains). Detection: include: mechanisms in the SPF record.
What else the same 119 domains use — cross-tabulated from the same daily snapshot (2026-07-13).
| Type | Service | Domains | Share of Send-Box users |
|---|---|---|---|
| Mailbox | Mail.ru for Business | 44 | 37.0% |
| Mailbox | Self-Hosted | 27 | 22.7% |
| Mailbox | Yandex 360 | 26 | 21.8% |
| Mailbox | Google Workspace | 7 | 5.9% |
| Mailbox | Unknown / Other | 4 | 3.4% |
| Mailbox | NIC.RU Mail | 2 | 1.7% |
| ESP | Unisender (RU) | 34 | 28.6% |
| ESP | SMTP.BZ | 15 | 12.6% |
| ESP | SendPulse | 13 | 10.9% |
| ESP | DashaMail (RU) | 9 | 7.6% |
119 domains in the Tranco top-1M use Send-Box as their email service provider (ESP) as of July 13, 2026, according to Live Direct Marketing's daily DNS scan.
Send-Box holds 0.02% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-07-13). The number is recomputed every day.
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 2026-07-13).
Amazon SES (6.21%) · SendGrid (Twilio) (4.76%) · Mailgun (4.11%) · Zendesk (3.86%) · Mailchimp (3.69%) · Mandrill (3.36%) · HubSpot (3.18%) · Salesforce (2.62%) · Mailjet (Sinch) (2.13%) · Cloudflare Email Routing (1.80%)
Showing 100 of 119 domains.