Bulk senders overwhelmingly prioritize html email content correctness over plain text correctness. For the past 2 years I’ve been getting monthly emails from a

Bulk senders overwhelmingly prioritize html email content correctness over plain text correctness. For the past 2 years I’ve been getting monthly emails from a major auto vendor financing company whose plaintext part begins: Dear < Customer >, This email is a reminder that your payment of $< Payment Amount > is due in < Days Prior Reminder to Due Date > day(s).