According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Trustpilot is the SaaS sender for 1,842 domains — 0.30% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Trustpilot is a SaaS platform that enables organisations to collect, manage, and display customer reviews. It sends review solicitation emails, notification messages, and review digests on behalf of its client businesses — meaning Trustpilot's email infrastructure handles the transmission whilst the client brand maintains the sender identity in the customer's inbox.
Analysis of SPF authorisation records across the web reveals Trustpilot concentrated in smaller-to-mid-market domains rather than the largest global brands, with notable prevalence in .com registrations. This footprint pattern frequently overlaps with Google Workspace adoption, suggesting appeal to lean, digitally native organisations. For email professionals and security teams, Trustpilot's presence in SPF records is a signal of third-party review-collection infrastructure — relevant for authentication policy decisions and for identifying legitimate sending channels that should not be treated as spoofed.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 3 | 0.2% |
| Top 10,000 | 12 | 0.7% |
| Top 100,000 | 226 | 12.3% |
| Top 1,000,000 | 1,486 | 80.7% |
| Unranked | 115 | 6.2% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 846 | 45.9% | |
| .co.uk | 237 | 12.9% | |
| .nl | 128 | 6.9% | |
| .de | 89 | 4.8% | |
| .dk | 75 | 4.1% | |
| .fr | 66 | 3.6% | |
| .it | 47 | 2.6% | |
| .se | 44 | 2.4% | |
| .be | 32 | 1.7% | |
| .es | 27 | 1.5% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 1,842 domains.
| Type | Service | Domains | Share of Trustpilot users |
|---|---|---|---|
| Mailbox | Google Workspace | 692 | 37.6% |
| Mailbox | Microsoft 365 | 637 | 34.6% |
| Mailbox | Unknown / Other | 158 | 8.6% |
| Mailbox | Self-Hosted | 77 | 4.2% |
| Mailbox | Mimecast | 44 | 2.4% |
| Mailbox | Generic / unmatched (mx*.*) | 26 | 1.4% |
Organisations using Trustpilot add SPF include mechanisms to their DNS records to authorise Trustpilot's sending servers. The platform maintains multiple sending endpoints rather than a single consolidated mail server pool, which means review emails from different clients originate from separate infrastructure. This distribution limits the risk that one client's sending misconfiguration or reputation problem cascades to damage the sender reputation of unrelated Trustpilot users. For receivers and email administrators, this design means monitoring Trustpilot's SPF ranges requires ongoing awareness of potential changes to the published mechanisms — especially as Trustpilot's client base and geographic reach evolve.
See the full Trustpilot data page (KPI cards, trend, sample domains) →
Trustpilot is a legitimate third-party email service, and organisations authorise its sending infrastructure via SPF. However, review solicitations themselves are frequent phishing lures, so receivers should verify that authentic Trustpilot mail is properly authenticated — any unsigned or SPF-failing email purporting to be a review request warrants scrutiny.
1,842 domains in the Tranco top-1M use Trustpilot as their SaaS sender as of July 13, 2026 (0.30% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Trustpilot accounts for 0.30% 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.
Trustpilot is declining — its share moved -0.01 pp over the last 30 days (as of July 13, 2026).
Trustpilot's largest TLD is .com (45.9% of its domains); it appears across 77 TLDs in total.