diff --git a/src/shared/utils/maskEmail.ts b/src/shared/utils/maskEmail.ts
index 08471f4010..d31d1c2ecf 100644
--- a/src/shared/utils/maskEmail.ts
+++ b/src/shared/utils/maskEmail.ts
@@ -8,7 +8,7 @@
  *   maskEmail("diego.souza@gmail.com")  // "di*********@g****.com"
  *   maskEmail("a@b.com")                // "a@b.com"  (too short to mask)
  */
-export function maskEmail(email: string | null | undefined, visibleChars = 2): string {
+export function maskEmail(email: string | null | undefined, visibleChars = 3): string {
   if (!email) return "";
   if (!email.includes("@")) return email;
 
@@ -25,9 +25,8 @@ export function maskEmail(email: string | null | undefined, visibleChars = 2): s
 
   const maskedUser = username.slice(0, visibleChars) + "*".repeat(username.length - visibleChars);
 
-  // Mask domain name: keep first char, mask the rest
-  const maskedDomain =
-    domainName.length > 1 ? domainName.slice(0, 1) + "*".repeat(domainName.length - 1) : domainName;
+  // Preserve the full domain name to maintain clear provider account differentiation
+  const maskedDomain = domainName;
 
   return `${maskedUser}@${maskedDomain}${tld}`;
 }
@@ -36,7 +35,7 @@ export function maskEmail(email: string | null | undefined, visibleChars = 2): s
  * Masks the value only when it looks like an email address.
  * Useful for fields like `name` that may be normalized to the raw email.
  */
-export function maskEmailLikeValue(value: string | null | undefined, visibleChars = 2): string {
+export function maskEmailLikeValue(value: string | null | undefined, visibleChars = 3): string {
   if (!value) return "";
   const trimmed = value.trim();
   if (!trimmed) return "";