Intercom email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 11, 2026), Intercom is the email service provider (ESP) for 557 domains — 0.09% of 631,089 SPF-publishing domains. Its strongest TLD is .com (69.7% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-11 DNS snapshot.
What Intercom represents in this dataset
Customer messaging platform — transactional + lifecycle email.
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 2026-09-11 snapshot shows about Intercom
Across 44 distinct TLDs its top three are .com (69.7%), .io (9.5%), .co (3.2%) — together 82.4% of the 557 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 Google Workspace (Mailbox, 451 domains, 81.0% of them), followed by Microsoft 365 (10.4%). 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 (2026-09-11); 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 Intercom
What else the same 557 domains use — cross-tabulated from the same daily snapshot (2026-09-11).
| Type | Service | Domains | Share of Intercom users |
|---|---|---|---|
| Mailbox | Google Workspace | 451 | 81.0% |
| Mailbox | Microsoft 365 | 58 | 10.4% |
| Mailbox | Self-Hosted | 9 | 1.6% |
| Mailbox | Proofpoint | 7 | 1.3% |
| Mailbox | Unknown / Other | 5 | 0.9% |
| Mailbox | Mimecast | 4 | 0.7% |
| ESP | Mandrill | 156 | 28.0% |
| ESP | HubSpot | 144 | 25.9% |
| ESP | SendGrid (Twilio) | 142 | 25.5% |
| ESP | Mailchimp | 121 | 21.7% |
TLD distribution (top 30 of 44)
Frequently asked questions
How many domains use Intercom?
557 domains in the Tranco top-1M use Intercom as their email service provider (ESP) as of September 11, 2026, according to Live Direct Marketing's daily DNS scan.
What is Intercom's market share?
Intercom holds 0.09% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-09-11). The number is recomputed every day.
What are the biggest alternatives to Intercom?
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 2026-09-11).
Largest email service provider (ESP)s in this category
Amazon SES (6.17%) · SendGrid (Twilio) (4.63%) · Mailgun (4.00%) · Zendesk (3.76%) · Mailchimp (3.56%) · Mandrill (3.24%) · HubSpot (3.10%) · Salesforce (2.54%) · Mailjet (Sinch) (2.12%) · Cloudflare Email Routing (1.93%)
Domain sample (top 100 by Tranco rank)
Showing 100 of 557 domains.