pair Networks SaaS sender
According to Live Direct Marketing's daily Tranco top-1M scan (September 22, 2026), pair Networks is the SaaS sender for 264 domains — 0.04% of 637,585 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 264 domains in the Tranco top-1M use pair Networks (0.04% of SPF-publishing domains).
- Snapshot date: 2026-09-22 — recomputed every day.
- Strongest TLD: .com (64.8% of its domains).
- Region skew: Global / US-skewed.
- Most co-used service: pair Networks.
- Directory category: mailbox provider.
Why pair Networks appears in this category
Pittsburgh-based pair Networks shared hosting outbound (pair.com).
We classify it as a mailbox provider 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.
pair Networks is a SaaS email infrastructure platform that enables organisations to send mail on behalf of their domains through pair Networks' shared servers rather than maintaining their own mail infrastructure. Domains using pair Networks advertise this delegation via an SPF include mechanism, telling receiving mail servers to trust pair Networks as an authorised sender on their behalf.
pair Networks sits predominantly in the long tail of smaller websites and regional deployments, with notable concentration in the .com registry space. For email professionals, this footprint matters: understanding pair Networks is essential when investigating deliverability for affected domains, since their sender reputation is intrinsically linked to pair Networks' infrastructure and the collective sending practices of all customer domains on that platform.
Where pair Networks sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 2 | 0.8% |
| Top 100,000 | 24 | 9.1% |
| Top 1,000,000 | 236 | 89.4% |
| Unranked | 2 | 0.8% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 171 | 64.8% | |
| .org | 59 | 22.3% | |
| .net | 13 | 4.9% | |
| .com.pk | 2 | 0.8% | |
| .info | 2 | 0.8% | |
| .us | 2 | 0.8% | |
| .jp | 1 | 0.4% | |
| .coop | 1 | 0.4% | |
| .eu | 1 | 0.4% | |
| .de | 1 | 0.4% |
What pair Networks users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 264 domains.
| Type | Service | Domains | Share of pair Networks users |
|---|---|---|---|
| Mailbox | pair Networks | 210 | 79.5% |
| Mailbox | Unknown / Other | 24 | 9.1% |
| Mailbox | Google Workspace | 10 | 3.8% |
| Mailbox | Microsoft 365 | 8 | 3.0% |
| Mailbox | Self-Hosted | 3 | 1.1% |
| Mailbox | FastMail | 2 | 0.8% |
Shared infrastructure and collective sender reputation
pair Networks operates shared email infrastructure for its customer domains, meaning all customers send through the same platform. Because sender reputation is collectively built, the infrastructure's standing with receiving mail servers is shaped by the combined sending practices and compliance of all pair Networks customers. Deliverability professionals must account for this when evaluating affected domains, since individual reputation is inseparable from the platform's broader standing.
See the full pair Networks data page (KPI cards, trend, sample domains) →
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Frequently asked questions
Should I test my domain's email deliverability against pair Networks infrastructure?
If your domain uses pair Networks for outbound mail, testing authentication configuration and engagement metrics is essential, since your sender reputation depends on both your own sending practices and pair Networks' infrastructure standing with receiving mail servers. If you receive email from pair Networks domains, understanding that reputation is shared across the platform helps contextualise delivery variance.
How many domains use pair Networks?
264 domains in the Tranco top-1M use pair Networks as their SaaS sender as of September 22, 2026 (0.04% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is pair Networks common enough to affect email deliverability testing?
pair Networks accounts for 0.04% 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 pair Networks most?
pair Networks's largest TLD is .com (64.8% of its domains); it appears across 21 TLDs in total.