According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), SmartEmailing is the email service provider (ESP) for 405 domains — 0.07% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
SmartEmailing is an email service provider (ESP) primarily serving smaller organisations and the regional European market, particularly in the Czech-speaking domain space. Like other ESPs, it provides sending infrastructure, and its presence is identifiable via SPF include records published by its customers.
The pattern of SmartEmailing's adoption—concentrated in smaller sites and frequently appearing alongside Microsoft 365 in corporate email stacks—shapes how it features in deliverability discussions. Because it occupies the long tail rather than the mainstream carrier tier, it carries less weight in the global email reputation ecosystem, but remains relevant for anyone receiving email from customers, partners, or employees in regions or segments where it is prevalent.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 3 | 0.7% |
| Top 100,000 | 32 | 7.9% |
| Top 1,000,000 | 330 | 81.5% |
| Unranked | 40 | 9.9% |
| TLD | Domains | Share | |
|---|---|---|---|
| .cz | 270 | 66.7% | |
| .sk | 52 | 12.8% | |
| .com | 28 | 6.9% | |
| .eu | 15 | 3.7% | |
| .hu | 10 | 2.5% | |
| .pl | 6 | 1.5% | |
| .ro | 5 | 1.2% | |
| .net | 4 | 1.0% | |
| .fr | 2 | 0.5% | |
| .org | 1 | 0.2% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 405 domains.
| Type | Service | Domains | Share of SmartEmailing users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 118 | 29.1% |
| Mailbox | Google Workspace | 80 | 19.8% |
| Mailbox | Self-Hosted | 62 | 15.3% |
| Mailbox | Unknown / Other | 54 | 13.3% |
| Mailbox | Seznam.cz (Czech) | 15 | 3.7% |
| Mailbox | Generic / unmatched (mx*.*) | 14 | 3.5% |
| ESP | Mailchimp | 33 | 8.1% |
| ESP | SparkPost | 32 | 7.9% |
| ESP | Heureka Mailing (CZ) | 22 | 5.4% |
| ESP | Mandrill | 15 | 3.7% |
SmartEmailing's strong footprint in the Czech domain space means that SPF/DKIM enforcement and reputation dynamics for its sending IP ranges may differ significantly from larger, globally distributed ESPs. Mailbox providers in regions where SmartEmailing is common may have tuned filtering rules or historical reputation signals specific to its infrastructure, whilst those outside the region may have minimal direct experience. This asymmetry can create blind spots for senders who conduct deliverability testing against a geographically weighted but globally-distributed sample of mailbox providers without weighting regional inboxes appropriately.
See the full SmartEmailing data page (KPI cards, trend, sample domains) →
SmartEmailing appears in SPF because your organisation uses or has used its sending service; you have authorised its IP ranges to send on your behalf via an SPF include mechanism. If you no longer use SmartEmailing, remove the include from your SPF record, as each additional include adds query complexity and can eventually cause SPF lookups to exceed the DNS query limit.
405 domains in the Tranco top-1M use SmartEmailing as their email service provider (ESP) as of July 13, 2026 (0.07% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
SmartEmailing accounts for 0.07% 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.
SmartEmailing's largest TLD is .cz (66.7% of its domains); it appears across 22 TLDs in total.