According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), SpamExperts (SolarWinds) is the email service provider (ESP) for 745 domains — 0.12% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
SpamExperts, now part of the SolarWinds portfolio, is a hosted email security platform offering filtering, archiving, and compliance features. It is typically deployed by smaller and mid-market organisations seeking managed email security without building in-house infrastructure.
SpamExperts' footprint across the web is concentrated in the .com registry and skewed towards smaller sites rather than the largest global brands. It frequently runs in tandem with Google Workspace on the same domains. For senders, this distribution means SpamExperts filtering most commonly affects mail destined for smaller or regional organisations; for recipients, it adds a filtering layer upstream of their Workspace mailboxes when both systems are deployed.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 26 | 3.5% |
| Top 1,000,000 | 611 | 82.0% |
| Unranked | 108 | 14.5% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 533 | 71.5% | |
| .org | 44 | 5.9% | |
| .co.uk | 21 | 2.8% | |
| .it | 19 | 2.6% | |
| .net | 17 | 2.3% | |
| .nl | 8 | 1.1% | |
| .org.uk | 6 | 0.8% | |
| .co | 5 | 0.7% | |
| .ai | 5 | 0.7% | |
| .ca | 4 | 0.5% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 745 domains.
| Type | Service | Domains | Share of SpamExperts (SolarWinds) users |
|---|---|---|---|
| Mailbox | Google Workspace | 196 | 26.3% |
| Mailbox | Self-Hosted | 195 | 26.2% |
| Mailbox | SpamExperts (SolarWinds) | 189 | 25.4% |
| Mailbox | Microsoft 365 | 90 | 12.1% |
| Mailbox | Unknown / Other | 11 | 1.5% |
| Mailbox | Mimecast | 6 | 0.8% |
| ESP | Mailchimp | 32 | 4.3% |
| ESP | MailerSend | 31 | 4.2% |
| ESP | Amazon SES | 30 | 4.0% |
| ESP | Mailgun | 26 | 3.5% |
SpamExperts and Google Workspace frequently operate on the same domains, with SpamExperts handling inbound mail filtering whilst Workspace manages mailbox services. This split-responsibility model means senders encounter SpamExperts' filtering rules upstream, before mail reaches Workspace recipients. For mail operators, rejection by SpamExperts occurs independently of Workspace's own acceptance policies, and sender reputation must satisfy both platforms independently.
See the full SpamExperts (SolarWinds) data page (KPI cards, trend, sample domains) →
Testing against SpamExperts is relevant if your recipients are predominantly smaller or mid-market organisations, particularly those using Google Workspace alongside it. For broad consumer or enterprise campaigns, other filtering systems typically take priority, but testing against SpamExperts becomes valuable in niche or regional market segments.
745 domains in the Tranco top-1M use SpamExperts (SolarWinds) as their email service provider (ESP) as of July 13, 2026 (0.12% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
SpamExperts (SolarWinds) accounts for 0.12% 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.
SpamExperts (SolarWinds)'s largest TLD is .com (71.5% of its domains); it appears across 66 TLDs in total.