esp
According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Microsoft 365 China is the email service provider (ESP) for 156 domains — 0.03% of 617,702 SPF-publishing domains. Its strongest TLD is .com (59.0% of its domains). Detection: include: mechanisms in the SPF record.
What else the same 156 domains use — cross-tabulated from the same daily snapshot (2026-07-13).
| Type | Service | Domains | Share of Microsoft 365 China users |
|---|---|---|---|
| Mailbox | Unknown / Other | 113 | 72.4% |
| Mailbox | Self-Hosted | 24 | 15.4% |
| Mailbox | QQ Mail (Tencent) | 3 | 1.9% |
| Mailbox | Lark / Feishu (ByteDance) | 3 | 1.9% |
| Mailbox | Google Workspace | 3 | 1.9% |
| Mailbox | Microsoft 365 | 2 | 1.3% |
| ESP | Zendesk | 9 | 5.8% |
| ESP | Mandrill | 6 | 3.8% |
| ESP | Alibaba DirectMail | 5 | 3.2% |
| ESP | Salesforce | 4 | 2.6% |
156 domains in the Tranco top-1M use Microsoft 365 China as their email service provider (ESP) as of July 13, 2026, according to Live Direct Marketing's daily DNS scan.
Microsoft 365 China holds 0.03% 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 156 domains.