Extole SaaS sender
According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), Extole is the SaaS sender for 128 domains — 0.02% of 637,420 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 128 domains in the Tranco top-1M use Extole (0.02% of SPF-publishing domains).
- Snapshot date: 2026-09-24 — recomputed every day.
- Strongest TLD: .com (92.2% of its domains).
- Most co-used service: Microsoft 365.
- Directory category: SaaS sender.
Why Extole appears in this category
Extole — referral marketing platform.
We classify it as a SaaS sender from include: mechanisms in the SPF record matching a maintained provider rule. This is infrastructure attribution from public DNS, not evidence of a direct contract or exclusive use.
Extole is a SaaS email platform that sends transactional and marketing email on behalf of client domains. It operates as a third-party email transmission provider, authorised via SPF delegation to handle mail dispatch for its customers.
The presence of Extole in a domain's SPF record indicates active deployment of third-party email infrastructure. Its concentration among established, mid-to-high-traffic sites in the .com space—and its frequent co-occurrence with Microsoft 365—reflects use in production environments at scale, typically by organisations that combine multiple email systems for different sending functions.
Where Extole sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 2 | 1.6% |
| Top 10,000 | 5 | 3.9% |
| Top 100,000 | 59 | 46.1% |
| Top 1,000,000 | 62 | 48.4% |
| Unranked | 0 | 0.0% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 118 | 92.2% | |
| .org | 4 | 3.1% | |
| .net | 2 | 1.6% | |
| .com.au | 1 | 0.8% | |
| .ca | 1 | 0.8% | |
| .app | 1 | 0.8% | |
| .co.uk | 1 | 0.8% |
What Extole users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 128 domains.
| Type | Service | Domains | Share of Extole users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 63 | 49.2% |
| Mailbox | Google Workspace | 34 | 26.6% |
| Mailbox | Proofpoint | 16 | 12.5% |
| Mailbox | Cisco IronPort | 2 | 1.6% |
| Mailbox | Mimecast | 2 | 1.6% |
| Mailbox | Self-Hosted | 1 | 0.8% |
SPF authentication and alignment
When a domain publishes an SPF include for Extole, it explicitly authorises Extole's mail servers to send messages on its behalf. Receiving systems validate outbound mail by checking whether the sending IP address is authorised in the domain's SPF record; if a message claims to originate from a domain listing an Extole include but did not actually come from Extole's infrastructure, SPF validation will fail, risking delivery issues. Proper SPF alignment with Extole is therefore essential for inbox placement—the platform's messages must originate from authorised infrastructure to pass authentication checks.
See the full Extole data page (KPI cards, trend, sample domains) →
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Frequently asked questions
Why do I see Extole in an SPF record?
Extole appears in SPF records because the domain uses Extole as an authorised third-party email sender; the SPF include tells receiving systems to accept mail from Extole's infrastructure on behalf of that domain.
How many domains use Extole?
128 domains in the Tranco top-1M use Extole as their SaaS sender as of September 24, 2026 (0.02% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is Extole common enough to affect email deliverability testing?
Extole 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.
Which countries or TLDs use Extole most?
Extole's largest TLD is .com (92.2% of its domains); it appears across 7 TLDs in total.