According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), APSIS is the email service provider (ESP) for 337 domains — 0.05% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
APSIS is a Swedish-based email service provider that processes email sending and campaign delivery for customers internationally. Its infrastructure appears in the authentication records of smaller to mid-market organisations across many country-code domains, with particular concentration in .se TLD registrations.
The presence of APSIS in a sender's authentication records typically signals mid-market or regional adoption rather than enterprise deployment. Those evaluating email deliverability should recognise APSIS as a common inclusion within the smaller-organisation segment, and should note that APSIS frequently co-exists with Microsoft 365 in the same sending infrastructure, creating a multi-platform authentication scenario that affects both configuration and reputation signals.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 3 | 0.9% |
| Top 100,000 | 35 | 10.4% |
| Top 1,000,000 | 278 | 82.5% |
| Unranked | 21 | 6.2% |
| TLD | Domains | Share | |
|---|---|---|---|
| .se | 137 | 40.7% | |
| .com | 79 | 23.4% | |
| .dk | 38 | 11.3% | |
| .no | 34 | 10.1% | |
| .fi | 16 | 4.7% | |
| .de | 5 | 1.5% | |
| .cz | 5 | 1.5% | |
| .com.tr | 3 | 0.9% | |
| .co.uk | 2 | 0.6% | |
| .sk | 2 | 0.6% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 337 domains.
| Type | Service | Domains | Share of APSIS users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 211 | 62.6% |
| Mailbox | Google Workspace | 46 | 13.6% |
| Mailbox | Unknown / Other | 27 | 8.0% |
| Mailbox | Self-Hosted | 14 | 4.2% |
| Mailbox | Proofpoint | 12 | 3.6% |
| Mailbox | Generic / unmatched (mx*.*) | 10 | 3.0% |
| ESP | Mandrill | 59 | 17.5% |
| ESP | SendGrid (Twilio) | 51 | 15.1% |
| ESP | Zendesk | 46 | 13.6% |
| ESP | Amazon SES | 35 | 10.4% |
APSIS frequently appears in organisations that also rely on Microsoft 365 for mail services, creating a multi-platform sending environment. When both systems are present, senders must ensure their SPF records include both providers correctly, and reputation signals for the domain will reflect traffic from both services; understanding this split infrastructure is important when diagnosing delivery issues or analysing sender reputation across different sending paths.
See the full APSIS data page (KPI cards, trend, sample domains) →
APSIS is a Swedish email service provider that appears as an SPF include in the authentication records of mid-market and smaller organisations. Senders who deploy APSIS must add its include directive to their SPF record to authenticate outbound mail.
337 domains in the Tranco top-1M use APSIS as their email service provider (ESP) as of July 13, 2026 (0.05% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
APSIS accounts for 0.05% 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.
APSIS's largest TLD is .se (40.7% of its domains); it appears across 22 TLDs in total.