Recorded changes to this MCP component: tools, parameters, capabilities, advisories and trust-score checks. Security-relevant changes by default; append ?materiality=all for everything.https://verifymcp.iohttps://verifymcp.io/servers/io-usefulapi-mailercheck/mailercheck#chg-chg_01a19ab0-ee8e-791c-86c1-9755731d4c8ahttps://verifymcp.io/servers/io-usefulapi-mailercheck/mailercheck#chg-chg_01a19ab0-ee8e-791c-86c1-9755731d4c8aStability (0.10 → unverified). Compared against 2026-11-01.Mon, 02 Nov 2026 05:17:29 GMTsecurityregressioncheck.unverifiablehttps://verifymcp.io/servers/io-usefulapi-mailercheck/mailercheck#chg-chg_01a19ab0-ee8f-7948-9fbf-b2ccdb7417a4https://verifymcp.io/servers/io-usefulapi-mailercheck/mailercheck#chg-chg_01a19ab0-ee8f-7948-9fbf-b2ccdb7417a4Tool safety (pass → unverified). Compared against 2026-11-01.Mon, 02 Nov 2026 05:17:29 GMTsecurityregressioncheck.unverifiablehttps://verifymcp.io/servers/io-usefulapi-mailercheck/mailercheck#chg-chg_01a19ab0-ee90-7b77-adb3-46695a302353https://verifymcp.io/servers/io-usefulapi-mailercheck/mailercheck#chg-chg_01a19ab0-ee90-7b77-adb3-46695a302353Authorization (pass → unverified). Compared against 2026-11-01.Mon, 02 Nov 2026 05:17:29 GMTsecurityregressioncheck.unverifiablehttps://verifymcp.io/servers/io-usefulapi-mailercheck/mailercheck#chg-chg_01a19ab0-ee94-7219-84d2-68c39e871ca4https://verifymcp.io/servers/io-usefulapi-mailercheck/mailercheck#chg-chg_01a19ab0-ee94-7219-84d2-68c39e871ca4Endpoint reachability (reachable → not serving MCP). Compared against 2026-11-01.Mon, 02 Nov 2026 05:17:29 GMTsecurityregressioncapture.status_changedhttps://verifymcp.io/servers/io-usefulapi-mailercheck/mailercheck#chg-chg_01a193fd-43ef-7418-b5a1-6eb98d1c1caahttps://verifymcp.io/servers/io-usefulapi-mailercheck/mailercheck#chg-chg_01a193fd-43ef-7418-b5a1-6eb98d1c1caaAuthorization (partial → pass). Compared against 2026-10-30.Sat, 31 Oct 2026 22:03:31 GMTsecurityimprovementcheck.verdict