Sending reputation is measured through various parameters, including:
Spam Complaints: The number of recipients marking your emails as spam. Bounce Rates: The percentage of emails that are returned as undeliverable. Engagement Rates: How recipients interact with your emails (opens, clicks, etc.). Blacklists: Whether your IP address or domain appears on any spam blacklists. Sending Frequency: How often you send emails and whether you follow a consistent schedule.