WiLL Mail email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 12, 2026), WiLL Mail is the email service provider (ESP) for 244 domains — 0.04% of 629,828 SPF-publishing domains. Its strongest TLD is .co.jp (35.7% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-12 DNS snapshot.
What WiLL Mail represents in this dataset
WiLL Mail — Japanese email delivery service.
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 2026-09-12 snapshot shows about WiLL Mail
Across 13 distinct TLDs its top three are .co.jp (35.7%), .com (26.2%), .jp (24.2%) — together 86.1% of the 244 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, 69 domains, 28.3% of them), followed by Microsoft 365 (17.6%). 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 (2026-09-12); 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 WiLL Mail
What else the same 244 domains use — cross-tabulated from the same daily snapshot (2026-09-12).
| Type | Service | Domains | Share of WiLL Mail users |
|---|---|---|---|
| Mailbox | Google Workspace | 69 | 28.3% |
| Mailbox | Microsoft 365 | 43 | 17.6% |
| Mailbox | Self-Hosted | 40 | 16.4% |
| Mailbox | Unknown / Other | 38 | 15.6% |
| Mailbox | SecureMX (JP) | 12 | 4.9% |
| Mailbox | Trend Micro | 9 | 3.7% |
| ESP | Amazon SES | 59 | 24.2% |
| ESP | HDEMS | 24 | 9.8% |
| ESP | Salesforce | 17 | 7.0% |
| ESP | Zendesk | 16 | 6.6% |
TLD distribution (top 13 of 13)
Frequently asked questions
How many domains use WiLL Mail?
244 domains in the Tranco top-1M use WiLL Mail as their email service provider (ESP) as of September 12, 2026, according to Live Direct Marketing's daily DNS scan.
What is WiLL Mail's market share?
WiLL Mail holds 0.04% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-09-12). The number is recomputed every day.
What are the biggest alternatives to WiLL Mail?
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 2026-09-12).
Largest email service provider (ESP)s in this category
Amazon SES (6.18%) · SendGrid (Twilio) (4.63%) · Mailgun (4.01%) · Zendesk (3.76%) · Mailchimp (3.57%) · Mandrill (3.25%) · HubSpot (3.11%) · Salesforce (2.55%) · Mailjet (Sinch) (2.12%) · Cloudflare Email Routing (1.94%)
Domain sample (top 100 by Tranco rank)
Showing 100 of 244 domains.