Interactive tools built on the same dataset the nanoPost reviews use — provider catalogues, mailer-plugin fingerprints, error-string library. Every tool links back to the review or reference page for the context.
Available now
- SMTP cost calculator — rank SMTP and email-API providers by their cheapest published plan for your monthly volume.
- WP Mail config generator — pick a sending provider and a delivery method (plugin settings, wp-config constants, mu-plugin, functions.php) and get the exact snippet to paste.
- DMARC XML reader — paste or drop a DMARC aggregate report (XML, .xml.gz, or .zip) and get a plain-English summary of who is sending as your domain and whether it aligns. Parsed entirely in your browser.
- Header auth visualizer — paste raw email headers and get a visual SPF/DKIM/DMARC/ARC chain with per-hop badges, per-mechanism verdict cards, and a plain-English “what to fix” block for every failure. Parsed entirely in your browser.
- Gmail clipping analyzer — paste an email HTML source and get a byte-weight breakdown by component (inlined CSS, base64 images, comments, tracking pixels) plus a clipping verdict at the ~102 KB Gmail desktop ceiling. Parsed entirely in your browser.
- MTA-STS generator — pick a policy mode, paste your inbound MX pattern list, and get the
mta-sts.txtpolicy file, the_mta-stsDNS TXT, and the_smtp._tlsTLS-RPT TXT — with placement hints per block. Generated in your browser.
In the pipeline
More tools ship as NAN-328 progresses: free-tier comparator, error-string decoder, SPF/DKIM/DMARC checker, mailer-plugin configuration generator. Each will appear here as it lands.