According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), SpamHero is the email service provider (ESP) for 106 domains — 0.02% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
SpamHero is an email service provider that appears in sender authentication records, specifically via SPF includes, where it acts as a third-party mail handler authorised to send email on behalf of customer organisations.
The presence of SpamHero in a domain's email infrastructure has particular relevance for recipient mail systems and network administrators. The vendor primarily serves smaller and mid-market organisations in the .com domain space, rather than the largest brands; this concentration, together with its frequent co-occurrence with other independent email vendors, means that recipient reputation assessment must account for the behaviour of a diverse customer base.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 1 | 0.9% |
| Top 100,000 | 4 | 3.8% |
| Top 1,000,000 | 83 | 78.3% |
| Unranked | 18 | 17.0% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 55 | 51.9% | |
| .org | 9 | 8.5% | |
| .net | 8 | 7.5% | |
| .com.au | 6 | 5.7% | |
| .co.uk | 4 | 3.8% | |
| .cl | 2 | 1.9% | |
| .org.uk | 2 | 1.9% | |
| .ca | 2 | 1.9% | |
| .fr | 1 | 0.9% | |
| .br | 1 | 0.9% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 106 domains.
| Type | Service | Domains | Share of SpamHero users |
|---|---|---|---|
| Mailbox | Unknown / Other | 80 | 75.5% |
| Mailbox | Self-Hosted | 9 | 8.5% |
| Mailbox | Microsoft 365 | 8 | 7.5% |
| Mailbox | Google Workspace | 4 | 3.8% |
| Mailbox | Barracuda | 2 | 1.9% |
| Mailbox | Mimecast | 1 | 0.9% |
| ESP | Mailchimp | 11 | 10.4% |
| ESP | SendGrid (Twilio) | 10 | 9.4% |
| ESP | Amazon SES | 8 | 7.5% |
| ESP | Mandrill | 8 | 7.5% |
Because SpamHero operates as a shared mail platform serving many distinct customer organisations, a sender's email deliverability depends partly on SpamHero's reputation with mail receivers. Recipient systems must evaluate not only the original sending domain but also SpamHero's standing across its customer base, making vendor reputation a material factor in inbox placement outcomes for any organisation using the service.
See the full SpamHero data page (KPI cards, trend, sample domains) →
SpamHero is an email service provider that sends mail on behalf of customer organisations. It appears in SPF records because those senders have authorised its servers, and recipient systems evaluate both the original domain and SpamHero's reputation.
106 domains in the Tranco top-1M use SpamHero as their email service provider (ESP) as of July 13, 2026 (0.02% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
SpamHero accounts for 0.02% 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.
SpamHero's largest TLD is .com (51.9% of its domains); it appears across 26 TLDs in total.