According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), PR Newswire is the email service provider (ESP) for 244 domains — 0.04% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
PR Newswire is a press-release distribution service operated by Cision, used by companies to syndicate news and announcements to journalists, news outlets, and subscriber networks. It sends email on behalf of client organisations to distribute content at scale.
PR Newswire's presence in SPF records predominantly at smaller organisations—often alongside Microsoft 365—reflects its role as a specialised press-distribution service. For senders, proper SPF and DMARC configuration is critical to avoid deliverability issues; for recipients, mail from PR Newswire should be authenticated, though the service has a narrower footprint than dominant global ESPs.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 7 | 2.9% |
| Top 100,000 | 54 | 22.1% |
| Top 1,000,000 | 179 | 73.4% |
| Unranked | 4 | 1.6% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 93 | 38.1% | |
| .org | 89 | 36.5% | |
| .de | 19 | 7.8% | |
| .edu | 7 | 2.9% | |
| .fr | 6 | 2.5% | |
| .org.uk | 5 | 2.0% | |
| .ca | 4 | 1.6% | |
| .co.uk | 3 | 1.2% | |
| .nl | 3 | 1.2% | |
| .ac.uk | 2 | 0.8% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 244 domains.
| Type | Service | Domains | Share of PR Newswire users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 128 | 52.5% |
| Mailbox | Google Workspace | 36 | 14.8% |
| Mailbox | Mimecast | 19 | 7.8% |
| Mailbox | Proofpoint | 13 | 5.3% |
| Mailbox | Barracuda | 11 | 4.5% |
| Mailbox | Unknown / Other | 9 | 3.7% |
| ESP | Mailchimp | 40 | 16.4% |
| ESP | Amazon SES | 35 | 14.3% |
| ESP | HubSpot | 34 | 13.9% |
| ESP | SendGrid (Twilio) | 32 | 13.1% |
Press-distribution services like PR Newswire are frequently added to domain SPF records to authorise outbound mail, and they introduce a common authentication challenge: if the domain's DMARC policy is set to reject unauthenticated mail, the service's outbound traffic must align with either SPF or DKIM authentication. Organisations often discover misalignment after deployment, leading to quarantined or bounced press releases; testing with a monitoring-only DMARC policy before enforcing stricter modes helps prevent these failures.
See the full PR Newswire data page (KPI cards, trend, sample domains) →
PR Newswire is a press-release distribution service operated by Cision; it appears in SPF records because your organisation authorised it to send email on your behalf. It is not a general ESP like Mailchimp or Klaviyo, but a specialised news-distribution platform, so its presence usually indicates you are using their press-release syndication service.
244 domains in the Tranco top-1M use PR Newswire as their email service provider (ESP) as of July 13, 2026 (0.04% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
PR Newswire 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.
PR Newswire's largest TLD is .com (38.1% of its domains); it appears across 23 TLDs in total.