saas
According to Live Direct Marketing's daily Tranco top-1M scan (July 26, 2026), KnowBe4 is the SaaS sender for 3,559 domains — 0.56% of 630,738 SPF-publishing domains. Its share has been stable over the last 30 days. Its strongest TLD is .com (55.6% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-07-26 DNS snapshot.
KnowBe4 — security awareness training and simulated phishing platform, the largest vendor in that category.
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 149 distinct TLDs its top three are .com (55.6%), .org (12.1%), .edu (4.2%) — together 72.0% of the 3,559 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 Microsoft 365 (Mailbox, 1,962 domains, 55.1% of them), followed by Google Workspace (14.1%). 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 3,559 domains use — cross-tabulated from the same daily snapshot (2026-07-26).
| Type | Service | Domains | Share of KnowBe4 users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 1,962 | 55.1% |
| Mailbox | Google Workspace | 501 | 14.1% |
| Mailbox | Mimecast | 293 | 8.2% |
| Mailbox | Proofpoint | 150 | 4.2% |
| Mailbox | Unknown / Other | 140 | 3.9% |
| Mailbox | Barracuda | 124 | 3.5% |
3,559 domains in the Tranco top-1M use KnowBe4 as their SaaS sender as of July 26, 2026, according to Live Direct Marketing's daily DNS scan.
KnowBe4 holds 0.56% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-07-26). The number is recomputed every day.
KnowBe4'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, Statuspage (Atlassian), Trustpilot (as of 2026-07-26).
Shopify (0.87%) · Pardot (Salesforce) (0.79%) · CodeTwo Email Signatures 365 (0.72%) · Statuspage (Atlassian) (0.33%) · Trustpilot (0.30%) · Firebase (Google) (0.29%) · Atlassian (Jira/Confluence) (0.29%) · BigCommerce (0.25%) · Lark / Feishu (0.21%) · Sage Intacct (0.18%)
Showing 100 of 3,559 domains.