According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), MailChannels is the email service provider (ESP) for 6,605 domains — 1.07% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
MailChannels is an email relay service positioned as a third-party SMTP provider for organisations that need outbound mail delivery infrastructure. It appears in SPF records as an authorised sending mechanism, meaning domain owners have delegated their mail delivery to MailChannels' infrastructure.
MailChannels' footprint is concentrated in smaller organisations and self-hosted platforms, particularly across .com domains, rather than amongst major brands. This pattern reflects its positioning as a practical relay solution for organisations running their own mail infrastructure but outsourcing the delivery layer. For senders and deliverability professionals, MailChannels is a common variable in the mid-market and self-hosted segment—understanding its reputation and authentication posture is important when diagnosing delivery issues or auditing sender alignment.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 3 | 0.0% |
| Top 10,000 | 21 | 0.3% |
| Top 100,000 | 306 | 4.6% |
| Top 1,000,000 | 4,820 | 73.0% |
| Unranked | 1,455 | 22.0% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 3,573 | 54.1% | |
| .org | 554 | 8.4% | |
| .net | 386 | 5.8% | |
| .com.br | 126 | 1.9% | |
| .id | 124 | 1.9% | |
| .co.uk | 94 | 1.4% | |
| .com.au | 86 | 1.3% | |
| .ca | 66 | 1.0% | |
| .co.za | 62 | 0.9% | |
| .nl | 55 | 0.8% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 6,605 domains.
| Type | Service | Domains | Share of MailChannels users |
|---|---|---|---|
| Mailbox | Self-Hosted | 2,772 | 42.0% |
| Mailbox | Google Workspace | 884 | 13.4% |
| Mailbox | MailChannels | 847 | 12.8% |
| Mailbox | Microsoft 365 | 640 | 9.7% |
| Mailbox | Unknown / Other | 362 | 5.5% |
| Mailbox | DreamHost | 324 | 4.9% |
| ESP | SpamExperts (AntiSpamCloud) | 272 | 4.1% |
| ESP | Amazon SES | 236 | 3.6% |
| ESP | SendGrid (Twilio) | 225 | 3.4% |
| ESP | Mailchimp | 213 | 3.2% |
When organisations use MailChannels to relay outbound mail, their sender reputation becomes intertwined with MailChannels' network reputation and policies. If MailChannels' IP ranges incur complaints or blocklist entries, it affects all senders relying on that relay, regardless of their individual sending practices. Conversely, outsourcing to a managed relay reduces the burden of maintaining dedicated IP reputation in-house. Monitoring feedback loops, SPF and DKIM alignment, and MailChannels' IP reputation is essential for organisations routing through the service, and for deliverability professionals supporting such senders.
See the full MailChannels data page (KPI cards, trend, sample domains) →
MailChannels is a common relay for self-hosted organisations, so it frequently appears in SPF records and mail headers. When auditing senders using MailChannels, verify proper DKIM and SPF alignment, check MailChannels' current IP reputation, and understand that the sender's deliverability is partially dependent on MailChannels' network standing.
6,605 domains in the Tranco top-1M use MailChannels as their email service provider (ESP) as of July 13, 2026 (1.07% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
MailChannels accounts for 1.07% 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.
MailChannels has been stable — its share moved -0.00 pp over the last 30 days (as of July 13, 2026).
MailChannels's largest TLD is .com (54.1% of its domains); it appears across 234 TLDs in total.