UKG / UltiPro SaaS sender
According to Live Direct Marketing's daily Tranco top-1M scan (September 14, 2026), UKG / UltiPro is the SaaS sender for 532 domains — 0.08% of 637,677 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 532 domains in the Tranco top-1M use UKG / UltiPro (0.08% of SPF-publishing domains).
- Snapshot date: 2026-09-14 — recomputed every day.
- 30-day share change: +0.00 pp.
- Strongest TLD: .com (75.4% of its domains).
- Most co-used service: Microsoft 365.
- Directory category: SaaS sender.
Why UKG / UltiPro appears in this category
UKG (Ultimate Kronos Group) — US HCM and workforce-management suite formed from the Ultimate Software and Kronos merger.
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.
UltiPro is a cloud-based human capital management platform operated by UKG (Ultimate Software Group) that includes email capabilities for transactional and internal communications. When organisations send email through UltiPro, they authenticate those messages via SPF records that reference UltiPro's mail infrastructure.
UltiPro's presence in SPF records across the web is concentrated in the long tail of smaller organisations and mid-market businesses, particularly within the .com domain space. Its frequent co-appearance with Microsoft 365 SPF entries indicates a typical customer profile: businesses that have adopted Microsoft cloud services and then integrated UltiPro for HR workflows and employee communications. For email senders and deliverability engineers, this footprint pattern means UltiPro is a niche infrastructure provider, but proper SPF configuration remains essential for organisations using it.
Where UKG / UltiPro sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 1 | 0.2% |
| Top 10,000 | 13 | 2.4% |
| Top 100,000 | 71 | 13.3% |
| Top 1,000,000 | 444 | 83.5% |
| Unranked | 3 | 0.6% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 401 | 75.4% | |
| .org | 89 | 16.7% | |
| .ca | 17 | 3.2% | |
| .net | 7 | 1.3% | |
| .edu | 7 | 1.3% | |
| .gov | 2 | 0.4% | |
| .me | 1 | 0.2% | |
| .education | 1 | 0.2% | |
| .ai | 1 | 0.2% | |
| .house | 1 | 0.2% |
What UKG / UltiPro users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 532 domains.
| Type | Service | Domains | Share of UKG / UltiPro users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 276 | 51.9% |
| Mailbox | Mimecast | 90 | 16.9% |
| Mailbox | Proofpoint | 52 | 9.8% |
| Mailbox | Google Workspace | 41 | 7.7% |
| Mailbox | Barracuda | 18 | 3.4% |
| Mailbox | Cisco IronPort | 15 | 2.8% |
SPF Configuration When Using UltiPro Alongside Microsoft 365
Organisations that run both Microsoft 365 and UltiPro in their email stack must ensure their SPF record authorises mail from both infrastructures without exceeding DNS lookup limits. Misconfiguration — such as redundant include mechanisms or excessive SPF entries — can cause SPF failures that harm deliverability. Senders and IT administrators should audit their SPF records to confirm UltiPro's mail servers are explicitly listed without duplication, particularly when Microsoft 365 entries are also present.
See the full UKG / UltiPro data page (KPI cards, trend, sample domains) →
Run a free inbox-placement test across Gmail, Outlook, Yahoo and more — see exactly where your mail lands and why.
Frequently asked questions
What is UltiPro in the context of email authentication?
UltiPro is a human capital management platform operated by UKG that includes email capabilities; it appears in SPF records of organisations that use it to send employee or transactional communications. Most external email senders do not interact with UltiPro directly, but organisations using it should ensure their SPF records properly authorise its mail infrastructure.
How many domains use UKG / UltiPro?
532 domains in the Tranco top-1M use UKG / UltiPro as their SaaS sender as of September 14, 2026 (0.08% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is UKG / UltiPro common enough to affect email deliverability testing?
UKG / UltiPro accounts for 0.08% 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.
Is UKG / UltiPro growing or declining?
UKG / UltiPro has been stable — its share moved +0.00 pp over the last 30 days (as of September 14, 2026).
Which countries or TLDs use UKG / UltiPro most?
UKG / UltiPro's largest TLD is .com (75.4% of its domains); it appears across 15 TLDs in total.