pair Networks mailbox provider
According to Live Direct Marketing's daily Tranco top-1M scan (September 12, 2026), pair Networks is the mailbox provider for 337 domains — 0.05% of 665,310 domains with MX records. Detection method: primary MX record (lowest preference).
Key facts
- 337 domains in the Tranco top-1M use pair Networks (0.05% of domains with MX records).
- Snapshot date: 2026-09-12 — recomputed every day.
- Strongest TLD: .com (66.2% of its domains).
- Region skew: Global / US-skewed.
- Most co-used service: SendGrid (Twilio).
- Directory category: hosting mail bundle.
Why pair Networks appears in this category
Pittsburgh independent hosting (since 1995).
We classify it as a hosting mail bundle from primary MX record (lowest preference) 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 mailbox provider offering email hosting for a range of registered domains. When a domain lists Pair Networks as its primary MX record, inbound mail is routed to and stored on Pair Networks' infrastructure.
Across the Tranco top-1M list, Pair Networks appears predominantly among smaller websites rather than enterprise brands, with notable concentration in the .com namespace and a global but US-skewed geographic footprint. The provider frequently co-occurs with SendGrid (Twilio) in domain configurations, suggesting many smaller organisations use Pair Networks for inbound mail whilst delegating outbound campaigns to a specialist sender. For deliverability practitioners, this pattern indicates that Pair Networks handles mail for a distinct tier: established but smaller-scale operators.
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 | 1 | 0.3% |
| Top 100,000 | 28 | 8.3% |
| Top 1,000,000 | 307 | 91.1% |
| Unranked | 1 | 0.3% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 223 | 66.2% | |
| .org | 68 | 20.2% | |
| .net | 22 | 6.5% | |
| .info | 3 | 0.9% | |
| .co.uk | 3 | 0.9% | |
| .us | 2 | 0.6% | |
| .com.au | 1 | 0.3% | |
| .contractors | 1 | 0.3% | |
| .at | 1 | 0.3% | |
| .com.pk | 1 | 0.3% |
What pair Networks users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 337 domains.
| Type | Service | Domains | Share of pair Networks users |
|---|---|---|---|
| ESP | SendGrid (Twilio) | 11 | 3.3% |
| ESP | Mailchimp | 8 | 2.4% |
| ESP | Amazon SES | 6 | 1.8% |
| ESP | Zendesk | 4 | 1.2% |
| ESP | Constant Contact | 3 | 0.9% |
| ESP | MailerLite | 3 | 0.9% |
| ESP | Help Scout | 2 | 0.6% |
| ESP | SendPulse | 2 | 0.6% |
| ESP | Zoho Campaigns | 2 | 0.6% |
| ESP | Mailgun | 2 | 0.6% |
Authentication and reputation in Pair Networks delivery
Pair Networks represents a different class of mail provider than webmail giants: smaller, independent, and used by organisations that often delegate sending to specialist platforms like SendGrid. For senders, this means that core authentication (SPF, DKIM, DMARC) and domain reputation become more critical to inbox placement, as Pair Networks does not employ the algorithmic filtering sophistication of Gmail or Microsoft 365. Testing against Pair Networks is therefore a useful way to validate that authentication and reputation configuration are correct.
See the full pair Networks data page (KPI cards, trend, sample domains) →
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Frequently asked questions
Should I test email deliverability against Pair Networks mailboxes?
Yes, Pair Networks is useful for testing because it serves smaller organisations and lacks the algorithmic filtering of major webmail platforms. Delivery issues there typically point to authentication or reputation problems rather than content filtering, making it a reliable diagnostic tool for email infrastructure.
How many domains use pair Networks?
337 domains in the Tranco top-1M use pair Networks as their mailbox provider as of September 12, 2026 (0.05% of domains with MX records), according to Live Direct Marketing's daily DNS scan.
Is pair Networks common enough to affect email deliverability testing?
pair Networks accounts for 0.05% of domains with MX records 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 (66.2% of its domains); it appears across 22 TLDs in total.