Zendesk email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 13, 2026), Zendesk is the email service provider (ESP) for 23,722 domains — 3.77% of 628,913 SPF-publishing domains. Its share has been stable over the last 30 days. Its strongest TLD is .com (58.8% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-13 DNS snapshot.
What Zendesk represents in this dataset
Enterprise customer support platform.
Directory category: Saas. 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 2026-09-13 snapshot shows about Zendesk
Across 339 distinct TLDs its top three are .com (58.8%), .de (3.2%), .co.uk (2.4%) — together 64.4% of the 23,722 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, 11,061 domains, 46.6% of them), followed by Microsoft 365 (29.2%). Its share of SPF-publishing domains has not moved measurably in 30 days. Year-over-year the share is -0.23 pp, so the 30-day move is against the longer trend. 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 (2026-09-13); 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 Zendesk
What else the same 23,722 domains use — cross-tabulated from the same daily snapshot (2026-09-13).
| Type | Service | Domains | Share of Zendesk users |
|---|---|---|---|
| Mailbox | Google Workspace | 11,061 | 46.6% |
| Mailbox | Microsoft 365 | 6,933 | 29.2% |
| Mailbox | Unknown / Other | 822 | 3.5% |
| Mailbox | Self-Hosted | 771 | 3.3% |
| Mailbox | Mimecast | 745 | 3.1% |
| Mailbox | Proofpoint | 742 | 3.1% |
| ESP | Amazon SES | 4,395 | 18.5% |
| ESP | SendGrid (Twilio) | 3,898 | 16.4% |
| ESP | HubSpot | 3,227 | 13.6% |
| ESP | Mandrill | 2,993 | 12.6% |
TLD distribution (top 30 of 339)
Frequently asked questions
How many domains use Zendesk?
23,722 domains in the Tranco top-1M use Zendesk as their email service provider (ESP) as of September 13, 2026, according to Live Direct Marketing's daily DNS scan.
What is Zendesk's market share?
Zendesk holds 3.77% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-09-13). The number is recomputed every day.
Is Zendesk growing or declining?
Zendesk's share has been stable over the last 30 days (±0.01 pp).
What are the biggest alternatives to Zendesk?
The largest email service provider (ESP)s in the same category by Tranco top-1M share are: Amazon SES, SendGrid (Twilio), Mailgun, Mailchimp, Mandrill (as of 2026-09-13).
Largest email service provider (ESP)s in this category
Amazon SES (6.19%) · SendGrid (Twilio) (4.64%) · Mailgun (4.01%) · Mailchimp (3.57%) · Mandrill (3.25%) · HubSpot (3.12%) · Salesforce (2.55%) · Mailjet (Sinch) (2.12%) · Cloudflare Email Routing (1.95%) · Brevo (ex-Sendinblue) (1.48%)
Domain sample (top 100 by Tranco rank)
Showing 100 of 23,722 domains.