Q-Send email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), Q-Send is the email service provider (ESP) for 368 domains — 0.06% of 637,420 SPF-publishing domains. Its strongest TLD is .jp (33.2% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-24 DNS snapshot.
What Q-Send represents in this dataset
Q-Send — 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 2026-09-24 snapshot shows about Q-Send
Across 10 distinct TLDs its top three are .jp (33.2%), .com (33.2%), .co.jp (27.2%) — together 93.5% of the 368 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 FSI (JP ISP) (Mailbox, 115 domains, 31.2% of them), followed by Google Workspace (13.9%). 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 (2026-09-24); 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 Q-Send
What else the same 368 domains use — cross-tabulated from the same daily snapshot (2026-09-24).
| Type | Service | Domains | Share of Q-Send users |
|---|---|---|---|
| Mailbox | FSI (JP ISP) | 115 | 31.2% |
| Mailbox | Google Workspace | 51 | 13.9% |
| Mailbox | Self-Hosted | 46 | 12.5% |
| Mailbox | Microsoft 365 | 45 | 12.2% |
| Mailbox | Unknown / Other | 42 | 11.4% |
| Mailbox | SecureMX (JP) | 13 | 3.5% |
| ESP | FSI Email Security | 160 | 43.5% |
| ESP | Amazon SES | 83 | 22.6% |
| ESP | Repica WebCAS | 30 | 8.2% |
| ESP | Cybermail | 15 | 4.1% |
TLD distribution (top 10 of 10)
Frequently asked questions
How many domains use Q-Send?
368 domains in the Tranco top-1M use Q-Send as their email service provider (ESP) as of September 24, 2026, according to Live Direct Marketing's daily DNS scan.
What is Q-Send's market share?
Q-Send holds 0.06% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-09-24). The number is recomputed every day.
What are the biggest alternatives to Q-Send?
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 2026-09-24).
Largest email service provider (ESP)s in this category
Amazon SES (6.23%) · SendGrid (Twilio) (4.68%) · Mailgun (4.01%) · Zendesk (3.77%) · Mailchimp (3.61%) · Mandrill (3.26%) · HubSpot (3.18%) · Salesforce (2.57%) · Mailjet (Sinch) (2.14%) · Cloudflare Email Routing (1.96%)
Domain sample (top 100 by Tranco rank)
Showing 100 of 368 domains.