- Additional unsubscribes (unsubscribe rate increased 140% for this company)
- Increase in spam complaint rates (spam rate increased sixfold for this company)
- Increased list shrinkage (Potential loss of 41.3% of list over 12 month period for this company)
- Potential damage to brand and email reputation
- Increased cost not covering revenue.
eINFO – a collection of articles and studies about email marketing.