According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Marketo (Adobe) is the email service provider (ESP) for 3,252 domains — 0.53% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Marketo (owned by Adobe) is a cloud-based marketing automation and email platform that enables organisations to create, manage, and optimise multi-channel marketing campaigns. Adobe operates it within its Experience Cloud portfolio, serving enterprise and mid-market customers worldwide.
Marketo's presence in email infrastructure, as measured through SPF include mechanisms, shows a distinctive long-tail pattern: it clusters among smaller and mid-sized organisations rather than the largest global brands, and is concentrated primarily in the .com domain space. Notably, Marketo deployments frequently coexist with Microsoft 365, indicating adoption among organisations already committed to the Microsoft ecosystem. For email administrators managing authentication, this footprint means Marketo's infrastructure typically supports steady, mid-volume senders rather than headline-volume channels, resulting in relatively stable reputation and predictable inbox placement for its users.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 35 | 1.1% |
| Top 10,000 | 145 | 4.5% |
| Top 100,000 | 855 | 26.3% |
| Top 1,000,000 | 2,101 | 64.6% |
| Unranked | 116 | 3.6% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 2,405 | 74.0% | |
| .org | 146 | 4.5% | |
| .co.jp | 91 | 2.8% | |
| .com.au | 71 | 2.2% | |
| .jp | 64 | 2.0% | |
| .net | 61 | 1.9% | |
| .io | 60 | 1.8% | |
| .ai | 44 | 1.4% | |
| .co.uk | 38 | 1.2% | |
| .edu | 31 | 1.0% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 3,252 domains.
| Type | Service | Domains | Share of Marketo (Adobe) users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 1,240 | 38.1% |
| Mailbox | Google Workspace | 909 | 28.0% |
| Mailbox | Proofpoint | 299 | 9.2% |
| Mailbox | Mimecast | 252 | 7.7% |
| Mailbox | Unknown / Other | 111 | 3.4% |
| Mailbox | Cisco IronPort | 71 | 2.2% |
| ESP | Salesforce | 1,053 | 32.4% |
| ESP | Amazon SES | 700 | 21.5% |
| ESP | Zendesk | 602 | 18.5% |
| ESP | SendGrid (Twilio) | 558 | 17.2% |
Marketo's presence in SPF records reveals the multi-tenant ESP pattern: each organisation using it adds an SPF include pointing to Adobe/Marketo's shared sending infrastructure, creating a distributed authentication footprint rather than consolidated, high-volume sender IP ranges. This is characteristic of all shared ESPs, and it means any domain deployed on Marketo must account for its SPF mechanism in the overall DNS record. The long-tail distribution of Marketo deployments (smaller and mid-sized organisations rather than the largest brands) implies the sending load is spread across many modest-volume senders rather than concentrated, which typically supports stable reputation for Marketo's infrastructure and predictable inbox placement for its users.
See the full Marketo (Adobe) data page (KPI cards, trend, sample domains) →
Marketo is Adobe's marketing automation platform used to send campaigns and transactional email; if your organisation uses it, your SPF and DKIM records will include Marketo's authentication mechanisms. If you see it but don't use Marketo directly, a vendor or partner of yours does.
3,252 domains in the Tranco top-1M use Marketo (Adobe) as their email service provider (ESP) as of July 13, 2026 (0.53% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Marketo (Adobe) accounts for 0.53% 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.
Marketo (Adobe) has been stable — its share moved -0.00 pp over the last 30 days (as of July 13, 2026).
Marketo (Adobe)'s largest TLD is .com (74.0% of its domains); it appears across 88 TLDs in total.