esp
According to Live Direct Marketing's daily Tranco top-1M scan (July 26, 2026), Emsd1 (transactional) is the email service provider (ESP) for 3,035 domains — 0.48% of 630,738 SPF-publishing domains. Its share has been stable over the last 30 days. Its strongest TLD is .com (57.5% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-07-26 DNS snapshot.
Generic transactional/marketing infra (emsd1.com).
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.
Across 120 distinct TLDs its top three are .com (57.5%), .org (6.7%), .nl (5.5%) — together 69.6% of the 3,035 domains, which makes the footprint moderately concentrated, with a recognisable home market. The service most often observed on the same domains is Google Workspace (Mailbox, 1,440 domains, 47.4% of them), followed by Microsoft 365 (30.8%). Its share of SPF-publishing domains has not moved measurably in 30 days. 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 (2026-07-26); 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.
What else the same 3,035 domains use — cross-tabulated from the same daily snapshot (2026-07-26).
| Type | Service | Domains | Share of Emsd1 (transactional) users |
|---|---|---|---|
| Mailbox | Google Workspace | 1,440 | 47.4% |
| Mailbox | Microsoft 365 | 934 | 30.8% |
| Mailbox | Self-Hosted | 144 | 4.7% |
| Mailbox | Unknown / Other | 111 | 3.7% |
| Mailbox | Mimecast | 70 | 2.3% |
| Mailbox | Barracuda | 35 | 1.2% |
| ESP | Amazon SES | 489 | 16.1% |
| ESP | SendGrid (Twilio) | 457 | 15.1% |
| ESP | Zendesk | 374 | 12.3% |
| ESP | Mailchimp | 357 | 11.8% |
3,035 domains in the Tranco top-1M use Emsd1 (transactional) as their email service provider (ESP) as of July 26, 2026, according to Live Direct Marketing's daily DNS scan.
Emsd1 (transactional) holds 0.48% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-07-26). The number is recomputed every day.
Emsd1 (transactional)'s share has been stable over the last 30 days (±0.01 pp).
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 2026-07-26).
Amazon SES (6.17%) · SendGrid (Twilio) (4.76%) · Mailgun (4.11%) · Zendesk (3.83%) · Mailchimp (3.70%) · Mandrill (3.36%) · HubSpot (3.19%) · Salesforce (2.62%) · Mailjet (Sinch) (2.13%) · Cloudflare Email Routing (1.82%)
Showing 100 of 3,035 domains.