diff --git a/dist/PlainNormalizer/PlainNormalizer.js b/dist/PlainNormalizer/PlainNormalizer.js
index 55ae65a9a61aab1c21f216c09436840b4141d832..1beb4c7c1e3dded63dd517c696d3a5c0f1ad7cf7 100644
--- a/dist/PlainNormalizer/PlainNormalizer.js
+++ b/dist/PlainNormalizer/PlainNormalizer.js
@@ -23,10 +23,16 @@ const patchOutlookSafelinksWrappers = (text) => {
     }
     return text;
 };
+/**
+ * Function removes seal from the plain text.
+ * Function has to support the next possible file names of the seal:
+ * qrcode.png, qrcode-xxx.png, seal-xxx.png
+ * @param s
+ */
 const removeQRCodes = (s) => {
     return s
-        .replace(/\[(image:\s)*qrcode.png]\s*<https:\/\/.+(vereign\.com|vrgnservices\.com).*?>/g, "")
-        .replace(/<https:\/\/.+(vereign\.com|vrgnservices\.com).*?>\s*\[(image: )*qrcode.png]/g, "");
+        .replace(/\[(image:\s)*(qrcode|seal).*?.png]\s*<https:\/\/.+(vereign\.com|vrgnservices\.com).*?>/g, "")
+        .replace(/<https:\/\/.+(vereign\.com|vrgnservices\.com).*?>\s*\[(image: )*(qrcode|seal).*?.png]/g, "");
 };
 const cleanupHiddenCharacters = (s) => {
     const removeSymbols = new RegExp(/[\u200B]+/g);
diff --git a/src/PlainNormalizer/PlainNormalizer.ts b/src/PlainNormalizer/PlainNormalizer.ts
index a30c84dfc3d887d338e6cc57fe46e7b92ee1d069..82310741784a5bb05d855f3da34f19cbacf2eeff 100644
--- a/src/PlainNormalizer/PlainNormalizer.ts
+++ b/src/PlainNormalizer/PlainNormalizer.ts
@@ -28,14 +28,20 @@ const patchOutlookSafelinksWrappers = (text: string) => {
   return text;
 };
 
+/**
+ * Function removes seal from the plain text.
+ * Function has to support the next possible file names of the seal:
+ * qrcode.png, qrcode-xxx.png, seal-xxx.png
+ * @param s
+ */
 const removeQRCodes = (s: string): string => {
   return s
     .replace(
-      /\[(image:\s)*qrcode.png]\s*<https:\/\/.+(vereign\.com|vrgnservices\.com).*?>/g,
+      /\[(image:\s)*(qrcode|seal).*?.png]\s*<https:\/\/.+(vereign\.com|vrgnservices\.com).*?>/g,
       ""
     )
     .replace(
-      /<https:\/\/.+(vereign\.com|vrgnservices\.com).*?>\s*\[(image: )*qrcode.png]/g,
+      /<https:\/\/.+(vereign\.com|vrgnservices\.com).*?>\s*\[(image: )*(qrcode|seal).*?.png]/g,
       ""
     );
 };