Frequently asked questions
Short and specific — if something is missing, write to kontakt@spamtest.pl.
Why does my email land in spam?
Usually one of four reasons: missing or broken authentication (SPF, DKIM, DMARC), poor IP or domain reputation (blocklists, new domain, sudden volume), infrastructure mistakes (no PTR, no TLS, HELO not matching rDNS) or content judged as spam. SpamTest shows which layer fails and exactly what to change.
SPF, DKIM and DMARC — one sentence each?
SPF is the list of servers allowed to send for a domain. DKIM is a cryptographic signature proving the message was not altered. DMARC tells the receiver what to do when SPF or DKIM do not align with the visible From domain, and sends you reports.
Spam test vs inbox placement — what is the difference?
The spam test analyzes one message with our engine (authentication, reputation, SpamAssassin, Rspamd) and explains what is wrong. Inbox placement sends the same message to real mailboxes at Gmail, Microsoft, WP or Onet and checks whether it landed in inbox, promotions or spam. The first answers “why”, the second “where”.
How is the 0–100 score computed?
We start at 100 and deduct points in four capped categories: authentication max 40, reputation 20, content 25, infrastructure 15. Each finding has a weight and severity. ≥ 85 without critical findings means “should reach the inbox”, 60–84 “risky”, below 60 “high risk”.
Does SpamTest send any email from my domain?
No. The service only receives. Our mail server has outbound disabled — even bounces are dropped. System mail (sign-in links) goes via Postmark from spamtest.pl.
What happens to my message content?
The raw message is stored on an EU server (OVH Warsaw) and deleted after 30 days; the analysis result without content is kept 90 days. We do not share content or train models on it.
Why is my score different from mail-tester.com?
Mail-tester scores mostly with SpamAssassin. We combine SpamAssassin, Rspamd, SPF/DKIM/DMARC verification on the real IP, IP and domain blocklists, PTR/TLS and Google/Microsoft 2024–2026 compliance. You may get 10/10 there and 70 here — because Gmail looks at more than SpamAssassin.
How many free tests do I get?
3 spam tests per day per IP and 30 DNS checks. After signing in (passwordless, link by email) you get history, 1 inbox placement credit and an API key. Paid plans raise the limits.
Do you cover Polish and German mailbox providers?
Yes — that is our edge. The placement pool includes WP.pl, o2.pl, Onet, Interia, GMX and WEB.DE next to Gmail, Outlook and Yahoo. Global tools do not have WP or o2 at all.
I run my own Postfix. What do I get beyond a score?
Concrete DNS records to paste (SPF, DMARC), the DKIM selectors found for your domain, PTR/HELO/TLS assessment and — on Pro/Business — an IP warm-up plan with per-ISP rate-limit settings.
Can I integrate the test into CI/CD or my own system?
Yes. API: POST /api/v1/tests returns an address, you send an email, GET /api/v1/tests/{token} returns JSON with the score and findings. Create an API key in the dashboard. A GitHub Actions example is on the API page.
Who is behind SpamTest?
2SECURE Sp. z o.o., Warsaw — since 2011 a provider of qualified electronic signatures and trust services to 5,000+ companies, operator of the dnsq.pl domain registrar.