Detect Mailcheck
Mailcheck is a JavaScript library designed to address the issue of misspelled email addresses during user input.
01
Websites using Mailcheck
49 hostnames in the PluginView corpus for this technology.
| Hostname | Last seen |
|---|---|
| pastemagazine.com | 8/3/2026 |
| visualcapitalist.com | 8/3/2026 |
| keywordseo.com.tw | 8/3/2026 |
| hrdive.com | 8/3/2026 |
| retaildive.com | 8/3/2026 |
02
What a detection means
- Establishes
- One or more public signals on the scanned page matched a known Mailcheck signature at the time of the scan.
- Does not establish
- A sitewide install of Mailcheck, an active vendor contract, exclusive use, or that Mailcheck is still in place today.
03
How to check a site for Mailcheck
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest Mailcheck signals.
- 2. PluginView reads only public responses and scores them against proprietary Mailcheck fingerprints. Rule bodies and identifiers are not published.
- 3. Review the confidence score and text explanation for Mailcheck on the results page.
04
FAQ: detecting Mailcheck
- Can PluginView detect Mailcheck without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for Mailcheck. It does not bypass authentication or paywalls.
- What category is Mailcheck?
- Mailcheck is classified under JavaScript libraries in the PluginView directory.
- Does PluginView publish Mailcheck fingerprint rules?
- No. Detection uses proprietary fingerprint rules that are not published. Scan results explain matches in plain language without disclosing rule bodies or identifiers.
