There are several reasons why redundant code can be problematic in email marketing:
Increased File Size: Redundant code can significantly increase the size of your emails, making them slower to load and more likely to be flagged as spam. Rendering Issues: Overlapping or conflicting styles can cause rendering issues, making your emails look unprofessional or different from how they were intended. Maintenance Challenges: Managing and updating emails with redundant code can be more difficult and time-consuming.