diff --git a/FAQ.md b/FAQ.md
index 7dd31da589..10e3bf5419 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -4478,7 +4478,7 @@ To show shields, the option *Show authentication status indicator* in the displa
 
 A message will be consired safely transported if *every* [Received](https://datatracker.ietf.org/doc/html/rfc2821#section-4.4) header:
 
-* contains the phrase 'using TLS' or 'version=TLS'
+* contains the phrase 'using TLS', 'via HTTP', 'version=TLS'
 * contains the phrase '(qmail <nnn> invoked by uid <nnn>)'
 * contains the phrase '(Postfix, from userid nnn)'
 * has a *by* with a local address
diff --git a/app/src/main/java/eu/faircode/email/MessageHelper.java b/app/src/main/java/eu/faircode/email/MessageHelper.java
index abb1e2836a..eb223e7b19 100644
--- a/app/src/main/java/eu/faircode/email/MessageHelper.java
+++ b/app/src/main/java/eu/faircode/email/MessageHelper.java
@@ -2094,6 +2094,7 @@ public class MessageHelper {
             header = header.substring(0, semi);
 
         if (header.contains("using TLS") ||
+                header.contains("via HTTP") ||
                 header.contains("version=TLS")) {
             Log.i("--- found TLS");
             return true;