Microsoft SharePoint SaaS sender
According to Live Direct Marketing's daily Tranco top-1M scan (September 22, 2026), Microsoft SharePoint is the SaaS sender for 121 domains — 0.02% of 637,585 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 121 domains in the Tranco top-1M use Microsoft SharePoint (0.02% of SPF-publishing domains).
- Snapshot date: 2026-09-22 — recomputed every day.
- Strongest TLD: .com (35.5% of its domains).
- Most co-used service: Microsoft 365.
- Directory category: SaaS sender.
Why Microsoft SharePoint appears in this category
Microsoft SharePoint Online — collaboration notifications.
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.
Microsoft SharePoint is a document collaboration and content management platform operated by Microsoft, available as a cloud service within Microsoft 365 and as an on-premises solution. It enables organisations to store, organise, and share documents, with integrated workflows and notifications that generate email on behalf of user domains.
SharePoint's footprint in email infrastructure concentrates in smaller and mid-market organisations rather than major enterprises, distributed across multiple top-level domains with .com predominant. When SharePoint sends notifications, alerts, or workflow-triggered messages from a domain, those emails must authenticate using that domain's SPF, DKIM, and DMARC records—meaning SharePoint's presence in a domain's email infrastructure can directly affect reputation and inbox placement for organisations that rely on it.
Where Microsoft SharePoint sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 4 | 3.3% |
| Top 100,000 | 11 | 9.1% |
| Top 1,000,000 | 106 | 87.6% |
| Unranked | 0 | 0.0% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 43 | 35.5% | |
| .org | 20 | 16.5% | |
| .co.uk | 9 | 7.4% | |
| .de | 6 | 5.0% | |
| .be | 4 | 3.3% | |
| .ca | 3 | 2.5% | |
| .pl | 3 | 2.5% | |
| .au | 2 | 1.7% | |
| .fr | 2 | 1.7% | |
| .co.jp | 2 | 1.7% |
What Microsoft SharePoint users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 121 domains.
| Type | Service | Domains | Share of Microsoft SharePoint users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 91 | 75.2% |
| Mailbox | Proofpoint | 6 | 5.0% |
| Mailbox | Barracuda | 5 | 4.1% |
| Mailbox | Self-Hosted | 5 | 4.1% |
| Mailbox | Mimecast | 5 | 4.1% |
| Mailbox | Unknown / Other | 4 | 3.3% |
SPF records and SharePoint's email-sender authentication
SharePoint sends transactional email—notifications, alerts, and workflow-triggered messages—which requires it to authenticate on behalf of customer domains. This is reflected in SPF records as include mechanisms pointing to Microsoft's sender infrastructure. Because SharePoint sits between the domain and recipient mailboxes, domain owners must ensure their SPF, DKIM, and DMARC configuration explicitly permits Microsoft's infrastructure; misalignment between a domain's authentication records and SharePoint's actual sending behaviour can trigger authentication failures, which modern mailbox providers interpret as a deliverability risk.
See the full Microsoft SharePoint data page (KPI cards, trend, sample domains) →
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Frequently asked questions
Does Microsoft SharePoint send email on behalf of my domain?
Yes. SharePoint sends workflow notifications and alerts using your domain as the sender, so your domain's SPF, DKIM, and DMARC records must be configured to permit Microsoft's email infrastructure. Misconfiguration can cause deliverability problems.
How many domains use Microsoft SharePoint?
121 domains in the Tranco top-1M use Microsoft SharePoint as their SaaS sender as of September 22, 2026 (0.02% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is Microsoft SharePoint common enough to affect email deliverability testing?
Microsoft SharePoint 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 Microsoft SharePoint most?
Microsoft SharePoint's largest TLD is .com (35.5% of its domains); it appears across 37 TLDs in total.