Several factors can contribute to low email delivery rates:
Poor List Quality: Sending emails to outdated or purchased lists can lead to a high bounce rate. Spam Traps: Spam traps are email addresses used to catch spammers. Sending emails to these addresses can damage your reputation. High Complaint Rates: If many recipients mark your emails as spam, it can negatively impact your delivery rates. Lack of Authentication: Not using email authentication protocols can make your emails look suspicious to ISPs. Content Issues: Poorly designed emails with suspicious content or too many links can trigger spam filters.