Smaily email service provider (ESP)

According to Live Direct Marketing's daily Tranco top-1M scan (July 12, 2026), Smaily is the email service provider (ESP) for 187 domains — 0.03% of 617,244 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.

Key facts

Smaily is an email service provider that handles transactional and marketing mail delivery for websites and applications. Operated from Estonia, it functions as a multi-tenant platform, allowing customers to send messages through its shared infrastructure and relay mechanisms.

Across the web's largest sites, Smaily appears sparingly—concentrated instead in the long tail of smaller organisations, particularly those with domains registered in the .ee space. It commonly appears in SPF records alongside Microsoft 365, suggesting adoption by businesses combining Microsoft's productivity stack with Smaily's mail delivery. For email administrators managing inbound filtering or sender authentication, Smaily's footprint signals a regional and mid-market presence rather than deployment at enterprise scale.

Where Smaily sits in the Tranco ranking

Tranco rank bandDomainsShare of its base
Top 1,00000.0%
Top 10,00000.0%
Top 100,000189.6%
Top 1,000,00014175.4%
Unranked2815.0%

Top-level domain split

TLDDomainsShare
.ee14477.0%
.com137.0%
.lv94.8%
.eu63.2%
.fi52.7%
.lt31.6%
.es21.1%
.ly10.5%
.net10.5%
.tv10.5%

What Smaily users also use

Cross-tabulated from the same daily snapshot — the other email services seen on the same 187 domains.

TypeServiceDomainsShare of Smaily users
MailboxMicrosoft 3658545.5%
MailboxUnknown / Other5629.9%
MailboxGoogle Workspace2010.7%
MailboxSelf-Hosted158.0%
MailboxGeneric / unmatched (mx*.*)42.1%
MailboxProofpoint Essentials21.1%
ESPMandrill115.9%
ESPMailchimp115.9%
ESPMailgun115.9%
ESPZendesk84.3%

Shared infrastructure and domain reputation isolation

As a multi-tenant ESP, Smaily customers share sending IP addresses. This means reputation at the IP layer is collective: if one customer sends spam, it can degrade deliverability for others on the same relay. Email systems evaluating Smaily-sourced messages see them originating from shared pools, so the sender's own domain reputation—established through SPF, DKIM, and DMARC alignment—becomes the primary differentiator. Proper authentication configuration is therefore essential when using Smaily to ensure your mail is assessed by your own sending record rather than the platform's aggregate reputation.

See the full Smaily data page (KPI cards, trend, sample domains) →

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Frequently asked questions

Is Smaily a widely used email service for major organisations?

Smaily is primarily adopted by smaller to mid-sized organisations and is especially prevalent in the Baltic region, rather than by large consumer or enterprise platforms. It typically appears auxiliary to primary email systems like Microsoft 365, rather than as a company's sole mail provider.

How many domains use Smaily?

187 domains in the Tranco top-1M use Smaily as their email service provider (ESP) as of July 12, 2026 (0.03% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.

Is Smaily common enough to affect email deliverability testing?

Smaily accounts for 0.03% 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.

Which countries or TLDs use Smaily most?

Smaily's largest TLD is .ee (77.0% of its domains); it appears across 12 TLDs in total.

Other email service provider (ESP)s

Amazon SES (6.21%)SendGrid (Twilio) (4.75%)Mailgun (4.11%)Zendesk (3.87%)Mailchimp (3.69%)Mandrill (3.36%)HubSpot (3.18%)Salesforce (2.62%)Mailjet (Sinch) (2.13%)Cloudflare Email Routing (1.80%)