Carts Guru email service provider (ESP)
According to Live Direct Marketing's daily Tranco top-1M scan (September 7, 2026), Carts Guru is the email service provider (ESP) for 301 domains — 0.05% of 632,414 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 301 domains in the Tranco top-1M use Carts Guru (0.05% of SPF-publishing domains).
- Snapshot date: 2026-09-07 — recomputed every day.
- Strongest TLD: .com (63.8% of its domains).
- Most co-used service: Google Workspace.
- Directory category: email service provider.
Why Carts Guru appears in this category
French ecommerce abandoned-cart automation.
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.
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.
Where Carts Guru sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 5 | 1.7% |
| Top 1,000,000 | 294 | 97.7% |
| Unranked | 2 | 0.7% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 192 | 63.8% | |
| .fr | 72 | 23.9% | |
| .es | 8 | 2.7% | |
| .net | 7 | 2.3% | |
| .ch | 6 | 2.0% | |
| .eu | 3 | 1.0% | |
| .com.au | 2 | 0.7% | |
| .re | 1 | 0.3% | |
| .de | 1 | 0.3% | |
| .sa | 1 | 0.3% |
What Carts Guru users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 301 domains.
| Type | Service | Domains | Share of Carts Guru users |
|---|---|---|---|
| Mailbox | Google Workspace | 73 | 24.3% |
| Mailbox | OVH Mail | 67 | 22.3% |
| Mailbox | Microsoft 365 | 59 | 19.6% |
| Mailbox | Self-Hosted | 28 | 9.3% |
| Mailbox | Unknown / Other | 22 | 7.3% |
| Mailbox | 1&1 IONOS | 12 | 4.0% |
| ESP | Mailjet (Sinch) | 76 | 25.2% |
| ESP | Brevo (ex-Sendinblue) | 40 | 13.3% |
| ESP | Zendesk | 31 | 10.3% |
| ESP | Mandrill | 18 | 6.0% |
SPF Inclusion in Long-Tail Deployments
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) →
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Frequently asked questions
What is Carts Guru and does it appear in email authentication records?
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.
How many domains use Carts Guru?
301 domains in the Tranco top-1M use Carts Guru as their email service provider (ESP) as of September 7, 2026 (0.05% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is Carts Guru common enough to affect email deliverability testing?
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.
Which countries or TLDs use Carts Guru most?
Carts Guru's largest TLD is .com (63.8% of its domains); it appears across 18 TLDs in total.