To check your email sender score, you can use free tools online that scan your IP address or domain and show you how email providers see your reputation. One common way is to enter your sending IP address into websites that check sender reputation. These tools usually rate your score from 0 to 100. The higher your score, the better your chances of landing in the inbox instead of the spam folder. Your sender score is based on things like how often people mark your emails as spam, how many bounces you get, and how often you send emails. If you’re using shared IPs on free platforms, your score may depend on how others using that same IP behave. Keeping your list clean, sending to active users, and using proper authentication (like SPF, DKIM, and DMARC) helps protect your score. What methods have you found helpful for keeping your sender reputation strong?