According to Live Direct Marketing's daily Tranco top-1M scan (July 12, 2026), Mailinblack is the email service provider (ESP) for 158 domains — 0.03% of 617,244 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Mailinblack is an email service provider (ESP) that routes outbound mail for websites across the internet, identifiable through SPF include mechanisms in DNS records. The service sits within a competitive landscape of mid-market and smaller-scale ESP providers rather than the tier of globally dominant mail platforms.
Its footprint concentrates heavily in French-language and .fr domains, serving primarily smaller publishers rather than major international brands. Because Mailinblack records frequently appear alongside unidentified or unmapped SPF entries, the infrastructure it represents often signals mixed or incomplete email authentication configuration—a pattern that affects both sender reputation assessment and recipient filtering decisions.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 10 | 6.3% |
| Top 1,000,000 | 137 | 86.7% |
| Unranked | 11 | 7.0% |
| TLD | Domains | Share | |
|---|---|---|---|
| .fr | 74 | 46.8% | |
| .com | 66 | 41.8% | |
| .org | 7 | 4.4% | |
| .pf | 3 | 1.9% | |
| .net | 2 | 1.3% | |
| .ma | 1 | 0.6% | |
| .biz | 1 | 0.6% | |
| .pro | 1 | 0.6% | |
| .be | 1 | 0.6% | |
| .care | 1 | 0.6% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 158 domains.
| Type | Service | Domains | Share of Mailinblack users |
|---|---|---|---|
| Mailbox | Unknown / Other | 125 | 79.1% |
| Mailbox | Microsoft 365 | 16 | 10.1% |
| Mailbox | Generic / unmatched (mx*.*) | 4 | 2.5% |
| Mailbox | Google Workspace | 3 | 1.9% |
| Mailbox | Self-Hosted | 2 | 1.3% |
| Mailbox | Proofpoint | 2 | 1.3% |
| ESP | Mailjet (Sinch) | 51 | 32.3% |
| ESP | Brevo (ex-Sendinblue) | 30 | 19.0% |
| ESP | SendGrid (Twilio) | 18 | 11.4% |
| ESP | Salesforce | 10 | 6.3% |
Mailinblack's predominance in French-speaking markets and .fr domains means that deliverability teams assessing European sender reputations will encounter it with above-average frequency. Given its positioning among smaller publishers and the configuration ambiguity often surrounding its records, mail authenticated through Mailinblack should be evaluated against the same SPF, DKIM, and DMARC standards as any other mail provider, without assumptions about authentication quality based on the provider identity alone.
See the full Mailinblack data page (KPI cards, trend, sample domains) →
Mailinblack is an ESP concentrated among smaller publishers in French-speaking regions, identifiable through SPF include entries. Treat mail routed through Mailinblack as you would any third-party mail provider: verify authentication correctness rather than making reputation assumptions based on the provider alone.
158 domains in the Tranco top-1M use Mailinblack as their email service provider (ESP) as of July 12, 2026 (0.03% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Mailinblack accounts for 0.03% 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.
Mailinblack's largest TLD is .fr (46.8% of its domains); it appears across 11 TLDs in total.