According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Carts Guru is the email service provider (ESP) for 292 domains — 0.05% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Carts Guru is an email service provider detected in the SPF records of websites across the Tranco top-1 million list. Its infrastructure appears as an SPF include mechanism, indicating authorised sending on behalf of its client domains.
The service is concentrated in the .com namespace and sits predominantly in the long tail of smaller sites rather than among major brands. It is frequently deployed alongside Google Workspace, suggesting a specific deployment pattern where smaller organisations combine mainstream email with a specialist outbound provider — a configuration that affects how email authentication and sender reputation are distributed.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 4 | 1.4% |
| Top 1,000,000 | 215 | 73.6% |
| Unranked | 73 | 25.0% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 190 | 65.1% | |
| .fr | 68 | 23.3% | |
| .es | 8 | 2.7% | |
| .net | 6 | 2.1% | |
| .ch | 5 | 1.7% | |
| .co.uk | 2 | 0.7% | |
| .eu | 2 | 0.7% | |
| .de | 2 | 0.7% | |
| .tv | 1 | 0.3% | |
| .be | 1 | 0.3% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 292 domains.
| Type | Service | Domains | Share of Carts Guru users |
|---|---|---|---|
| Mailbox | Google Workspace | 71 | 24.3% |
| Mailbox | OVH Mail | 58 | 19.9% |
| Mailbox | Microsoft 365 | 57 | 19.5% |
| Mailbox | Self-Hosted | 34 | 11.6% |
| Mailbox | Unknown / Other | 20 | 6.8% |
| Mailbox | Generic / unmatched (mx*.*) | 11 | 3.8% |
| ESP | Mailjet (Sinch) | 71 | 24.3% |
| ESP | Brevo (ex-Sendinblue) | 38 | 13.0% |
| ESP | Zendesk | 33 | 11.3% |
| ESP | Amazon SES | 18 | 6.2% |
Carts Guru's footprint reflects a common pattern among smaller sites: inclusion in SPF records alongside Google Workspace. When multiple authorised senders are listed in an SPF policy, the combined reputation profile is distributed across both the organisation's domain and each included provider's infrastructure. This architecture is typical in smaller deployments but requires attention to SPF syntax, lookup limits, and the interaction between multiple sending paths to avoid authentication issues.
See the full Carts Guru data page (KPI cards, trend, sample domains) →
Carts Guru is an email service provider whose infrastructure appears in SPF records, primarily among smaller sites in the .com namespace often deployed alongside Google Workspace. Understanding its role in a domain's SPF configuration is relevant for email authentication and deliverability diagnostics.
292 domains in the Tranco top-1M use Carts Guru as their email service provider (ESP) as of July 13, 2026 (0.05% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Carts Guru 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.
Carts Guru's largest TLD is .com (65.1% of its domains); it appears across 17 TLDs in total.