Several common data formatting issues can affect email marketing:
1. Invalid Email Addresses: Email lists often contain invalid addresses due to typos, outdated information, or malicious entries. Invalid emails can result in high bounce rates and damage your sender reputation. 2. Inconsistent Data Formats: Different sources may store data in varying formats. For example, dates may be stored as "MM/DD/YYYY" in one system and "DD-MM-YYYY" in another. This inconsistency can hinder segmentation and personalization efforts. 3. Special Characters and Encoding: Special characters, such as accents or symbols, can cause display issues if not properly encoded. They may appear as gibberish or question marks in the recipient's inbox. 4. Duplicate Entries: Duplicate entries in an email list can lead to multiple emails being sent to the same recipient, which can annoy your audience and increase your unsubscribe rate. 5. Missing Information: Incomplete data can affect personalization. For example, missing first names can result in generic greetings like "Dear Customer," which lack the personal touch.