According to Live Direct Marketing's daily Tranco top-1M scan (July 12, 2026), Q-Send is the email service provider (ESP) for 370 domains — 0.06% of 617,244 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Q-Send is an email service provider offering email campaign and delivery services to customer websites. It is identifiable in customer domain infrastructure through SPF authentication records that list Q-Send as an include.
Q-Send's customer base concentrates in the long tail of smaller and mid-market websites rather than the largest global brands, with particularly strong presence in Japanese-language sites and .jp domains, where it frequently appears alongside FSI, a Japanese ISP. This regional and market-segment concentration means senders targeting Japan or Asia-Pacific regions should include Q-Send in their email authentication audits and reputation monitoring.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 27 | 7.3% |
| Top 1,000,000 | 302 | 81.6% |
| Unranked | 41 | 11.1% |
| TLD | Domains | Share | |
|---|---|---|---|
| .jp | 133 | 35.9% | |
| .com | 121 | 32.7% | |
| .co.jp | 95 | 25.7% | |
| .net | 13 | 3.5% | |
| .shop | 3 | 0.8% | |
| .ne.jp | 2 | 0.5% | |
| .link | 1 | 0.3% | |
| .coop | 1 | 0.3% | |
| .tw | 1 | 0.3% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 370 domains.
| Type | Service | Domains | Share of Q-Send users |
|---|---|---|---|
| Mailbox | FSI (JP ISP) | 132 | 35.7% |
| Mailbox | Google Workspace | 52 | 14.1% |
| Mailbox | Unknown / Other | 49 | 13.2% |
| Mailbox | Self-Hosted | 40 | 10.8% |
| Mailbox | Microsoft 365 | 40 | 10.8% |
| Mailbox | SecureMX (JP) | 11 | 3.0% |
| ESP | FSI Email Security | 180 | 48.6% |
| ESP | Amazon SES | 77 | 20.8% |
| ESP | Repica WebCAS | 32 | 8.6% |
| ESP | Cybermail | 15 | 4.1% |
Q-Send's prominence in .jp domains and frequent co-occurrence with FSI indicates its role in Japanese email delivery infrastructure. Senders targeting Japanese recipients or testing against Japanese mailbox providers should verify that their SPF records correctly reference Q-Send and monitor how recipient ISPs treat Q-Send traffic in their filtering and reputation systems.
See the full Q-Send data page (KPI cards, trend, sample domains) →
If you send email to Japanese recipients, include Q-Send in your deliverability testing, as it is prevalent in Japanese email infrastructure. For non-Japan targeting, test Q-Send only if your own sending infrastructure uses it.
370 domains in the Tranco top-1M use Q-Send as their email service provider (ESP) as of July 12, 2026 (0.06% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Q-Send accounts for 0.06% 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.
Q-Send's largest TLD is .jp (35.9% of its domains); it appears across 9 TLDs in total.