Benchmark Email email service provider (ESP)
According to Live Direct Marketing's daily Tranco top-1M scan (September 12, 2026), Benchmark Email is the email service provider (ESP) for 323 domains — 0.05% of 629,828 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 323 domains in the Tranco top-1M use Benchmark Email (0.05% of SPF-publishing domains).
- Snapshot date: 2026-09-12 — recomputed every day.
- Strongest TLD: .com (50.8% of its domains).
- Most co-used service: Google Workspace.
- Directory category: email service provider.
Why Benchmark Email appears in this category
Polyglot small-business newsletter platform.
We classify it as a email service provider from include: mechanisms in the SPF record matching a maintained provider rule. This is infrastructure attribution from public DNS, not evidence of a direct contract or exclusive use.
Benchmark Email is a cloud-based email service provider that supplies campaign management, automation, and list segmentation tools to its customers. The platform is operated as a fully managed service for organisations that need email marketing capabilities without building in-house infrastructure.
Its footprint in domain authentication records clusters among smaller and mid-market organisations rather than enterprises, with particular concentration in the .com namespace and frequent pairing with Google Workspace. For email and deliverability professionals, this pattern matters because it identifies where legitimate Benchmark Email traffic originates; it is useful for threat modelling and authentication auditing. Domains that claim to send through Benchmark Email but do not—or whose SPF records reference it despite having ceased using the service—typically signal misconfiguration or neglect.
Where Benchmark Email sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 2 | 0.6% |
| Top 10,000 | 2 | 0.6% |
| Top 100,000 | 46 | 14.2% |
| Top 1,000,000 | 273 | 84.5% |
| Unranked | 0 | 0.0% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 164 | 50.8% | |
| .jp | 31 | 9.6% | |
| .org | 19 | 5.9% | |
| .co.jp | 16 | 5.0% | |
| .net | 11 | 3.4% | |
| .com.br | 10 | 3.1% | |
| .com.tw | 7 | 2.2% | |
| .or.jp | 5 | 1.5% | |
| .ca | 5 | 1.5% | |
| .in | 5 | 1.5% |
What Benchmark Email users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 323 domains.
| Type | Service | Domains | Share of Benchmark Email users |
|---|---|---|---|
| Mailbox | Google Workspace | 110 | 34.1% |
| Mailbox | Microsoft 365 | 96 | 29.7% |
| Mailbox | Self-Hosted | 35 | 10.8% |
| Mailbox | Unknown / Other | 25 | 7.7% |
| Mailbox | Alibaba Mail | 7 | 2.2% |
| Mailbox | Mimecast | 7 | 2.2% |
| ESP | Amazon SES | 56 | 17.3% |
| ESP | SendGrid (Twilio) | 30 | 9.3% |
| ESP | Zendesk | 30 | 9.3% |
| ESP | Mailgun | 28 | 8.7% |
SPF configuration and sender authentication
Benchmark Email publishes an SPF include mechanism for customers to authorise its mail servers to send campaigns on behalf of their domains. Sites using Benchmark Email must add this include to their SPF record; inbound mail systems and security teams commonly use the presence or absence of the include as a marker of whether that domain actively delegates sending to the platform. Misconfigured or abandoned SPF records that reference Benchmark Email without active use can harm authentication alignment, degrade sender reputation, and trigger filtering or rejection downstream.
See the full Benchmark Email data page (KPI cards, trend, sample domains) →
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Frequently asked questions
What does Benchmark Email's SPF include in my domain's authentication record mean?
It authorises Benchmark Email's mail servers to send campaigns on your behalf. Add the include to your SPF record only if you actively use Benchmark Email; leaving it in place after discontinuing the service can harm mail authentication and deliverability.
How many domains use Benchmark Email?
323 domains in the Tranco top-1M use Benchmark Email as their email service provider (ESP) as of September 12, 2026 (0.05% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is Benchmark Email common enough to affect email deliverability testing?
Benchmark Email accounts for 0.05% 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.
Which countries or TLDs use Benchmark Email most?
Benchmark Email's largest TLD is .com (50.8% of its domains); it appears across 42 TLDs in total.