diff --git a/addons/snailmail/models/snailmail_letter.py b/addons/snailmail/models/snailmail_letter.py
index e6bc01809a4..c5162fdde7f 100644
--- a/addons/snailmail/models/snailmail_letter.py
+++ b/addons/snailmail/models/snailmail_letter.py
@@ -417,6 +417,8 @@ class SnailmailLetter(models.Model):
         ])
         for letter in letters_send:
             letter._snailmail_print()
+            if letter.error_code == 'CREDIT_ERROR':
+                break  # avoid spam
             # Commit after every letter sent to avoid to send it again in case of a rollback
             if autocommit:
                 self.env.cr.commit()