According to Live Direct Marketing's daily Tranco top-1M scan (July 12, 2026), Toast is the SaaS sender for 146 domains — 0.02% of 617,244 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Toast is a SaaS platform that delivers email on behalf of customer domains. It is identified in email infrastructure data through SPF include mechanisms, which authorise Toast's mail servers to send messages for the protected domain.
Toast's distribution is concentrated among smaller and mid-market organisations—spread across international TLDs, .com-led, and frequently paired with Google Workspace—which signals a customer base managing email through third-party platforms rather than dedicated infrastructure. For email operators, Toast represents a legitimate delivery platform whose long-tail positioning means it may lack pre-configured filtering rules in systems tuned primarily to major senders.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 1 | 0.7% |
| Top 10,000 | 4 | 2.7% |
| Top 100,000 | 27 | 18.5% |
| Top 1,000,000 | 96 | 65.8% |
| Unranked | 18 | 12.3% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 62 | 42.5% | |
| .co.kr | 32 | 21.9% | |
| .kr | 27 | 18.5% | |
| .net | 9 | 6.2% | |
| .org | 4 | 2.7% | |
| .ai | 3 | 2.1% | |
| .io | 3 | 2.1% | |
| .in | 1 | 0.7% | |
| .jp | 1 | 0.7% | |
| .co | 1 | 0.7% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 146 domains.
| Type | Service | Domains | Share of Toast users |
|---|---|---|---|
| Mailbox | Google Workspace | 45 | 30.8% |
| Mailbox | Self-Hosted | 34 | 23.3% |
| Mailbox | Unknown / Other | 16 | 11.0% |
| Mailbox | Generic / unmatched (mx*.*) | 6 | 4.1% |
| Mailbox | Microsoft 365 | 6 | 4.1% |
| Mailbox | Proofpoint | 6 | 4.1% |
Toast appears in SPF records as an include mechanism, allowing domain owners to declare Toast's IP ranges as authorised senders. The presence of a Toast SPF include is a straightforward authentication signal and carries no inherent reputational implication; it simply reflects the domain's choice to outsource email delivery to Toast rather than operate mail servers directly.
See the full Toast data page (KPI cards, trend, sample domains) →
The domain has authorised Toast to send email on its behalf, typically because the organisation uses Toast as its email delivery platform.
146 domains in the Tranco top-1M use Toast as their SaaS sender as of July 12, 2026 (0.02% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Toast accounts for 0.02% 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.
Toast's largest TLD is .com (42.5% of its domains); it appears across 13 TLDs in total.