To diagnose a drop in deliverability, follow these steps:
Analyze Bounce Rates: High bounce rates can indicate problems with your email list or sender reputation. Check Spam Complaints: Monitor the number of recipients marking your emails as spam. A high complaint rate is a red flag. Review Open and Click Rates: A sudden drop in these metrics can indicate deliverability issues. Audit Your Email Content: Ensure that your emails comply with spam regulations and contain relevant, non-spammy content. Use Email Testing Tools: Tools such as Mail-Tester or Litmus can help identify issues with your emails.