diff --git a/app/models/account.rb b/app/models/account.rb
index 2c5455d8e..8be36bf5b 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -570,7 +570,11 @@ class Account < ApplicationRecord
   def create_canonical_email_block!
     return unless local? && user_email.present?
 
-    CanonicalEmailBlock.create(reference_account: self, email: user_email)
+    begin
+      CanonicalEmailBlock.create(reference_account: self, email: user_email)
+    rescue ActiveRecord::RecordNotUnique
+      # A canonical e-mail block may already exist for the same e-mail
+    end
   end
 
   def destroy_canonical_email_block!