Useinbox email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 14, 2026), Useinbox is the email service provider (ESP) for 85 domains — 0.01% of 637,677 SPF-publishing domains. Its strongest TLD is .com (51.8% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-14 DNS snapshot.
What Useinbox represents in this dataset
Useinbox — Turkish SMB email marketing platform.
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 2026-09-14 snapshot shows about Useinbox
Across 8 distinct TLDs its top three are .com (51.8%), .tr (18.8%), .com.tr (12.9%) — together 83.5% of the 85 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, 31 domains, 36.5% 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 (2026-09-14); 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 Useinbox
What else the same 85 domains use — cross-tabulated from the same daily snapshot (2026-09-14).
| Type | Service | Domains | Share of Useinbox users |
|---|---|---|---|
| Mailbox | Google Workspace | 31 | 36.5% |
| Mailbox | Microsoft 365 | 15 | 17.6% |
| Mailbox | Self-Hosted | 14 | 16.5% |
| Mailbox | Unknown / Other | 8 | 9.4% |
| Mailbox | Generic / unmatched (mx*.*) | 5 | 5.9% |
| Mailbox | Proofpoint | 2 | 2.4% |
| ESP | Amazon SES | 6 | 7.1% |
| ESP | MailerLite | 4 | 4.7% |
| ESP | SendGrid (Twilio) | 4 | 4.7% |
| ESP | Zoho Campaigns | 3 | 3.5% |
TLD distribution (top 8 of 8)
Frequently asked questions
How many domains use Useinbox?
85 domains in the Tranco top-1M use Useinbox as their email service provider (ESP) as of September 14, 2026, according to Live Direct Marketing's daily DNS scan.
What is Useinbox's market share?
Useinbox holds 0.01% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-09-14). The number is recomputed every day.
What are the biggest alternatives to Useinbox?
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 2026-09-14).
Largest email service provider (ESP)s in this category
Amazon SES (6.16%) · SendGrid (Twilio) (4.62%) · Mailgun (4.00%) · Zendesk (3.75%) · Mailchimp (3.57%) · Mandrill (3.24%) · HubSpot (3.11%) · Salesforce (2.54%) · Mailjet (Sinch) (2.12%) · Cloudflare Email Routing (1.95%)
Domain sample (top 85 by Tranco rank)
Showing 85 of 85 domains.