Poor Deliverability: If your emails donât reach your intended recipients due to spam filters or other deliverability issues, you lose potential revenue. Low Open Rates: Even if your emails are delivered, they may not be opened. This could be due to ineffective subject lines or poor timing. Low Click-Through Rates (CTR): If recipients open your emails but do not click on your call-to-action links, your campaign may not generate the desired revenue. Unsubscribes: Losing subscribers reduces your audience size, which can directly impact your revenue potential. Ineffective Content: Poorly crafted content can fail to engage or convert your audience, resulting in lost sales opportunities.