According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), CARMA Mail is the email service provider (ESP) for 277 domains — 0.04% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
CARMA Mail is an email service provider, identified in web infrastructure primarily through SPF include mechanisms in domain records. It provides email authentication and delivery services to its customer base across the globe.
The footprint of CARMA Mail reveals a characteristic pattern of dispersed, smaller-business adoption: widely distributed across many international domains, particularly .com registrations, but concentrated in the long tail of smaller and mid-sized organisations rather than enterprise brands. This distribution, frequently co-occurring with Google Workspace deployments, indicates CARMA Mail's positioning within the ecosystem of email infrastructure for geographically dispersed, smaller-scale senders. For anyone monitoring email sources or testing deliverability across diverse sender populations, this long-tail footprint is material context when assessing authentication and mail origin claims.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 2 | 0.7% |
| Top 100,000 | 39 | 14.1% |
| Top 1,000,000 | 224 | 80.9% |
| Unranked | 12 | 4.3% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 123 | 44.4% | |
| .se | 56 | 20.2% | |
| .ca | 21 | 7.6% | |
| .dk | 13 | 4.7% | |
| .no | 9 | 3.2% | |
| .co.uk | 8 | 2.9% | |
| .de | 6 | 2.2% | |
| .io | 5 | 1.8% | |
| .fi | 4 | 1.4% | |
| .nl | 4 | 1.4% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 277 domains.
| Type | Service | Domains | Share of CARMA Mail users |
|---|---|---|---|
| Mailbox | Google Workspace | 128 | 46.2% |
| Mailbox | Microsoft 365 | 107 | 38.6% |
| Mailbox | Unknown / Other | 7 | 2.5% |
| Mailbox | Cisco IronPort | 6 | 2.2% |
| Mailbox | Migadu | 6 | 2.2% |
| Mailbox | Mimecast | 4 | 1.4% |
| ESP | Zendesk | 102 | 36.8% |
| ESP | Mailjet (Sinch) | 51 | 18.4% |
| ESP | SendGrid (Twilio) | 35 | 12.6% |
| ESP | Amazon SES | 27 | 9.7% |
CARMA Mail's presence in email authentication infrastructure is revealed through inspection of SPF records, where it appears as an include mechanism in domain configurations. Unlike consolidated, enterprise-facing email providers, CARMA Mail's adoption is dispersed across many smaller organisations rather than concentrated among prestige brands. Understanding this pattern—visible through SPF data but not prominent in mainstream deliverability testing—is useful for organisations assessing the full diversity of sender infrastructure in their inbound mail stream, particularly when evaluating mail authentication claims across smaller business segments and international deployments.
See the full CARMA Mail data page (KPI cards, trend, sample domains) →
If your recipient base includes many smaller businesses or international senders, CARMA Mail is likely present in your inbound mail and worth understanding; however, for most mainstream deliverability testing, the larger consolidated email service providers are the priority.
277 domains in the Tranco top-1M use CARMA Mail as their email service provider (ESP) as of July 13, 2026 (0.04% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
CARMA Mail accounts for 0.04% 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.
CARMA Mail's largest TLD is .com (44.4% of its domains); it appears across 27 TLDs in total.