CrmStyle email service provider (ESP)
According to Live Direct Marketing's daily Tranco top-1M scan (September 13, 2026), CrmStyle is the email service provider (ESP) for 336 domains — 0.05% of 628,913 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 336 domains in the Tranco top-1M use CrmStyle (0.05% of SPF-publishing domains).
- Snapshot date: 2026-09-13 — recomputed every day.
- Strongest TLD: .co.jp (44.9% of its domains).
- Most co-used service: Microsoft 365.
- Directory category: email service provider.
Why CrmStyle appears in this category
CrmStyle — Italian email marketing platform.
We classify it as a email service provider from include: mechanisms in the SPF record matching a maintained provider rule. This is infrastructure attribution from public DNS, not evidence of a direct contract or exclusive use.
CrmStyle is an email service provider offering SMTP relay and transactional email services. It authorises its sending infrastructure through SPF include mechanisms that organisations add to their DNS records.
CrmStyle's footprint is concentrated in smaller deployments, internationally distributed with prevalence in the .co.jp region and often coexisting with Microsoft 365. Because CrmStyle's traffic is less densely represented in major ISP reputation systems, senders must be deliberate about authentication and monitoring.
Where CrmStyle sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 1 | 0.3% |
| Top 10,000 | 5 | 1.5% |
| Top 100,000 | 55 | 16.4% |
| Top 1,000,000 | 274 | 81.5% |
| Unranked | 1 | 0.3% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .co.jp | 151 | 44.9% | |
| .jp | 94 | 28.0% | |
| .com | 60 | 17.9% | |
| .or.jp | 10 | 3.0% | |
| .net | 8 | 2.4% | |
| .ac.jp | 5 | 1.5% | |
| .coop | 2 | 0.6% | |
| .ne.jp | 2 | 0.6% | |
| .com.ph | 1 | 0.3% | |
| .co | 1 | 0.3% |
What CrmStyle users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 336 domains.
| Type | Service | Domains | Share of CrmStyle users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 84 | 25.0% |
| Mailbox | Google Workspace | 64 | 19.0% |
| Mailbox | Unknown / Other | 54 | 16.1% |
| Mailbox | Self-Hosted | 38 | 11.3% |
| Mailbox | SecureMX (JP) | 26 | 7.7% |
| Mailbox | Trend Micro | 16 | 4.8% |
| ESP | Amazon SES | 64 | 19.0% |
| ESP | Salesforce | 41 | 12.2% |
| ESP | Repica WebCAS | 35 | 10.4% |
| ESP | HDEMS | 32 | 9.5% |
IP reputation in less-established sending networks
CrmStyle's concentration in the long tail means its IP ranges receive less traffic volume than the largest ESPs and are sampled less frequently by major ISPs' reputation tracking systems. Senders adopting CrmStyle should not assume their domain reputation will automatically transfer to CrmStyle's infrastructure; instead, they must actively manage authentication (DKIM, DMARC, SPF alignment) and monitor delivery metrics independently, particularly when CrmStyle is used alongside Microsoft 365 in hybrid deployments.
See the full CrmStyle data page (KPI cards, trend, sample domains) →
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Frequently asked questions
What is CrmStyle and why does it appear in SPF records?
CrmStyle is an email service provider that sends transactional email on behalf of its customers. It appears in SPF records because organisations authorise it to send from their domains by adding its SPF include.
How many domains use CrmStyle?
336 domains in the Tranco top-1M use CrmStyle as their email service provider (ESP) as of September 13, 2026 (0.05% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is CrmStyle common enough to affect email deliverability testing?
CrmStyle accounts for 0.05% of SPF-publishing domains in the top 1M. Whether you should seed a test mailbox there depends on how much of your audience it represents — the co-usage table above shows the services it appears alongside most.
Which countries or TLDs use CrmStyle most?
CrmStyle's largest TLD is .co.jp (44.9% of its domains); it appears across 12 TLDs in total.