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Knowledge base
What every Ekomejl tool is for, what to put in, how to read what comes out and where each one stops.
On this page
#How this works
Every tool in the menu has an article here. Each one follows the same order: what the tool is for, what you enter, how it works, how to read the results, a worked example, and the limits worth knowing before you trust a result.
- Press
/anywhere on this page to search. Arrow keys move through the results and Enter opens one. - The book button in the top bar of every tool opens the article about that tool.
- Open the tool at the top of an article takes you straight to it.
- Pick Czech or English at the top of the list. Your choice is remembered in this browser.
#Which tool do I need?
Not sure where to start? Match the symptom to a tool:
| Symptom | Start with |
|---|---|
| Mail lands in spam or fails authentication | DNS Checker, then SPF Checker and Email Header Analyzer |
| Clicks in emails do not open or lose UTM tags | Tracking Domain Checker and Redirect & UTM Inspector |
| A domain or IP might be blocklisted | Blacklist Checker and Domain Intel |
| A webhook does not arrive | Webhook Endpoint Tester and Request Log Viewer |
| A signup form does not show on a website | Form Scanner and Form Previewer |
| A product feed fails to import | XML Feed Debugger |
| A template breaks in some inboxes | Email HTML Inspector |
#All articles
Start here
Deliverability
DNS CheckerLooks up the DNS records a sending domain needs (MX, SPF, DKIM, DMARC and the rest) and checks the website certificate on the way.Tracking Domain CheckerChecks a click-tracking subdomain end to end: the CNAME to SparkPost, the HTTPS certificate and whether a test click really redirects.Domain IntelBuilds a quick trust picture of a domain: registration and age, DNS, HTTPS and certificate, web archive history and a heuristic grade.Blacklist CheckerChecks an IPv4 address or a domain against free public blocklists and gives delisting links for any hit.SPF CheckerExpands an SPF record include by include and counts DNS lookups against the limit of 10.Redirect & UTM InspectorFollows a link hop by hop and shows whether UTM and other tracking parameters survive to the final page.
Debugging
Email Header AnalyzerReads the raw headers of a received email and shows SPF, DKIM and DMARC results, alignment and the delivery path.Email HTML InspectorChecks email template HTML for missing unsubscribe links, broken links, images without alt text, merge tags and markup that inboxes block.Template JSON DebuggerChecks an exported Ecomail template file (.json) before you import it: broken JSON, the element tree, attributes, unsafe HTML, images, merge tags and fonts, with fix-ups and a downloadable fixed copy.Webhook Endpoint TesterSends one real HTTP request from our server to your endpoint and shows exactly what came back.Request Log ViewerGives you a private catcher address that records every request sent to it, and shows them with headers and body.
Forms
Feeds
Build
Workflow BuilderChain steps on a canvas into small reusable checks: inputs, HTTP and DNS lookups, conditions with true and false branches, JSON and text tools, and a result.Regex BuilderWrite a regular expression or assemble it from blocks, read what each part means, and test it live on your own text, with snippets for JavaScript, PHP and Python.