saas
According to Live Direct Marketing's daily Tranco top-1M scan (July 26, 2026), Greenhouse is the SaaS sender for 626 domains — 0.10% of 630,738 SPF-publishing domains. Its share has been stable over the last 30 days. Its strongest TLD is .com (72.2% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-07-26 DNS snapshot.
Greenhouse — applicant tracking system widely used by mid-market and enterprise recruiters in North America.
Directory category: Saas. The classification comes from include: mechanisms in the SPF record. It describes observed DNS infrastructure, not a commercial relationship and not the placement of any individual message.
Across 52 distinct TLDs its top three are .com (72.2%), .org (5.8%), .io (4.5%) — together 82.4% of the 626 domains, which makes the footprint narrow — three TLDs cover most of it, which is typical of a regional or single-market operator. The service most often observed on the same domains is Google Workspace (Mailbox, 379 domains, 60.5% of them), followed by Microsoft 365 (21.9%). Its share of SPF-publishing domains has not moved measurably in 30 days. Directly comparable by the same detection rule: Shopify, Pardot (Salesforce), CodeTwo Email Signatures 365. Ranking between them reflects what is published in DNS, not delivery quality or volume sent. All figures come from a single daily DNS snapshot (2026-07-26); a domain appears here when its published records match the include: mechanisms in the SPF record rule, which is an infrastructure fact, not a commercial relationship.
What else the same 626 domains use — cross-tabulated from the same daily snapshot (2026-07-26).
| Type | Service | Domains | Share of Greenhouse users |
|---|---|---|---|
| Mailbox | Google Workspace | 379 | 60.5% |
| Mailbox | Microsoft 365 | 137 | 21.9% |
| Mailbox | Proofpoint | 35 | 5.6% |
| Mailbox | Mimecast | 32 | 5.1% |
| Mailbox | Proofpoint Essentials | 6 | 1.0% |
| Mailbox | Self-Hosted | 6 | 1.0% |
626 domains in the Tranco top-1M use Greenhouse as their SaaS sender as of July 26, 2026, according to Live Direct Marketing's daily DNS scan.
Greenhouse holds 0.10% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-07-26). The number is recomputed every day.
Greenhouse's share has been stable over the last 30 days (±0.01 pp).
The largest SaaS senders in the same category by Tranco top-1M share are: Shopify, Pardot (Salesforce), CodeTwo Email Signatures 365, KnowBe4, Statuspage (Atlassian) (as of 2026-07-26).
Shopify (0.87%) · Pardot (Salesforce) (0.79%) · CodeTwo Email Signatures 365 (0.72%) · KnowBe4 (0.56%) · Statuspage (Atlassian) (0.33%) · Trustpilot (0.30%) · Firebase (Google) (0.29%) · Atlassian (Jira/Confluence) (0.29%) · BigCommerce (0.25%) · Lark / Feishu (0.21%)
Showing 100 of 626 domains.