Advanced iframe debug console – l: local messages, r: remote messages

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Mobile Safari/537.36

Headers of https://mailchi.mp/firstchurchboston/officefirstchurchbostonorg-14571424:
HTTP/1.1 200 OK
Content-Type: text/html; charset=UTF-8
Content-Location: https://us7.campaign-archive.com/?u=2f3234fc94ecc4df09a638f3f&id=d9f1a13ebd
x-code-owner: 871464121225367182
x-code-owner-github-team: @mailchimp-monolith/multi-channel
x-envoy-upstream-service-time: 685
x-mc-customer-tier: pro
x-ua-compatible: IE=edge,chrome=1
x-debug-metrics: 0.0050, 0.000, -, 200, 0.682
Server: istio-envoy
x-envoy-decorator-operation: mc-request-mapper-proxy-desired-service.mc-lps-mcrequestmapperproxy-use2-prd.svc.cluster.local:8090/*
x-request-id: 1-6aa15f78-4ff64f244bf7dd2f36ffbdd9
x-intuit-upstream-locality-region: us-east-2
intuit_tid: 1-6aa15f78-4ff64f244bf7dd2f36ffbdd9
x-content-type-options: nosniff
strict-transport-security: max-age=15552000
x-spanid: c12587d0-b768-7221-51ea-aeebf0c40493
x-amzn-trace-id: Root=1-6aa15f78-4ff64f244bf7dd2f36ffbdd9
Date: Wed, 09 Sep 2026 13:30:32 GMT
Connection: keep-alive
Set-Cookie: _mcid=1.92e6e1c71d08e633b6c07b5acc0d7f96.bd9048a67b8276b8faa08bb9c3ea734c7a9ec97692c18e7842e0b675ab2740b1; expires=Thu, 09 Sep 2027 13:30:32 GMT; Max-Age=31536000; path=/
Set-Cookie: _mc_anon_id=deleted; expires=Thu, 01 Jan 1970 00:00:01 GMT; Max-Age=0; path=/
Akamai-GRN: 0.14192117.1788960632.55cb875d

The page does exist and no X-Frame-Options header was found. But there can still be a iframe blocker script on this page. Go here for a full check.