Spam rejections are instances when an email service provider (ESP) or a recipient's email server blocks or filters your email, designating it as spam. This can significantly impact your deliverability rate and reduce the effectiveness of your email marketing campaigns.
There are several reasons why an email might be marked as spam:
Poor sender reputation High complaint rates Spammy content (e.g., excessive use of certain keywords) Improper email authentication (e.g., lacking DKIM or SPF records) Sending to inactive or invalid email addresses
Several tools can aid in preventing spam rejections:
SpamAssassin for spam filtering and scoring. Sender Score for monitoring your sender reputation. MXToolbox for checking email authentication records. ESP-provided analytics for monitoring open rates, click-through rates, and bounce rates.
If your emails are being marked as spam, take immediate action:
Audit your email list and remove inactive or invalid addresses. Check and update your email authentication records. Evaluate your email content for spammy elements. Contact major ISPs to get your domain removed from blacklists.
Conclusion
Spam rejections can severely impact the success of your email marketing efforts. By understanding the causes and taking proactive steps to avoid them, you can improve your email deliverability and overall campaign effectiveness. Use the right tools and practices to maintain a good sender reputation and keep your emails out of the spam folder.