According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Mailendo is the email service provider (ESP) for 843 domains — 0.14% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Mailendo is an email service provider that handles email delivery for websites, operating as a delegated SMTP relay identified in email infrastructure audits through SPF include mechanisms published by its customers.
Mailendo's customer base is concentrated among smaller and mid-market websites across international markets, predominantly on dot-com domains and often deployed alongside Google Workspace. This distribution means Mailendo's reputation is shaped by a broad but dispersed set of senders. For both senders and receivers, Mailendo's filtering status and IP reputation thus affect a diverse, internationally-distributed customer base rather than a small number of large platforms.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 6 | 0.7% |
| Top 100,000 | 114 | 13.5% |
| Top 1,000,000 | 632 | 75.0% |
| Unranked | 91 | 10.8% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 356 | 42.2% | |
| .gr | 277 | 32.9% | |
| .org | 29 | 3.4% | |
| .co.uk | 22 | 2.6% | |
| .net | 11 | 1.3% | |
| .cy | 8 | 0.9% | |
| .ro | 7 | 0.8% | |
| .io | 7 | 0.8% | |
| .edu | 7 | 0.8% | |
| .eu | 6 | 0.7% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 843 domains.
| Type | Service | Domains | Share of Mailendo users |
|---|---|---|---|
| Mailbox | Google Workspace | 258 | 30.6% |
| Mailbox | Microsoft 365 | 255 | 30.2% |
| Mailbox | Self-Hosted | 136 | 16.1% |
| Mailbox | Unknown / Other | 41 | 4.9% |
| Mailbox | Proofpoint | 14 | 1.7% |
| Mailbox | Mimecast | 12 | 1.4% |
| ESP | Mailchimp | 83 | 9.8% |
| ESP | Mandrill | 72 | 8.5% |
| ESP | Amazon SES | 65 | 7.7% |
| ESP | SendGrid (Twilio) | 59 | 7.0% |
When a domain publishes Mailendo in its SPF record, that domain authorises Mailendo's infrastructure to send email on its behalf. Because Mailendo operates shared IP pools for multiple customers, poor sending practices by any customer—low list quality, compliance violations, or high complaint rates—can degrade those pools' reputation and impact deliverability for all customers sharing them. Responsible compliance across Mailendo's customer base protects shared reputation; conversely, concentrated bad-sending behaviour from a single customer can briefly affect others on the same infrastructure.
See the full Mailendo data page (KPI cards, trend, sample domains) →
If your recipient population includes addresses from domains relying on Mailendo as their mail relay, testing with a Mailendo-originated sender is prudent. Otherwise, prioritise testing against the larger ESP platforms that account for a greater share of your recipient base.
843 domains in the Tranco top-1M use Mailendo as their email service provider (ESP) as of July 13, 2026 (0.14% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Mailendo accounts for 0.14% 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.
Mailendo's largest TLD is .com (42.2% of its domains); it appears across 75 TLDs in total.