esp
According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Intercom is the email service provider (ESP) for 581 domains — 0.09% of 617,702 SPF-publishing domains. Its strongest TLD is .com (69.4% of its domains). Detection: include: mechanisms in the SPF record.
What else the same 581 domains use — cross-tabulated from the same daily snapshot (2026-07-13).
| Type | Service | Domains | Share of Intercom users |
|---|---|---|---|
| Mailbox | Google Workspace | 469 | 80.7% |
| Mailbox | Microsoft 365 | 62 | 10.7% |
| Mailbox | Self-Hosted | 9 | 1.5% |
| Mailbox | Proofpoint | 7 | 1.2% |
| Mailbox | Unknown / Other | 5 | 0.9% |
| Mailbox | Generic / unmatched (mx*.*) | 4 | 0.7% |
| ESP | Mandrill | 166 | 28.6% |
| ESP | SendGrid (Twilio) | 149 | 25.6% |
| ESP | HubSpot | 147 | 25.3% |
| ESP | Mailchimp | 126 | 21.7% |
581 domains in the Tranco top-1M use Intercom as their email service provider (ESP) as of July 13, 2026, according to Live Direct Marketing's daily DNS scan.
Intercom holds 0.09% 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 581 domains.