Several factors can lead to reduced sender credibility:
High Spam Complaints: If recipients frequently mark your emails as spam, it signals to email service providers (ESPs) that your emails are unwanted. Inconsistent Sending Patterns: Sending emails irregularly or in bursts can make recipients suspicious and lead to reduced trust. Poor Content Quality: Low-quality content, such as irrelevant information or excessive promotional material, can turn off recipients. Lack of Personalization: Generic emails that do not address the recipient's interests or needs can decrease engagement and credibility. Outdated Lists: Using outdated or purchased email lists can lead to high bounce rates and spam complaints.