New senders cannot simply send numerous sales or marketing emails without consequenses, like blocklisting or user suspensions. Owners of new domain names or fresh email addresses need a warming campaign to prove legitimacy and establish a positive sender reputation.

Reputation warming is a 5-15 week process of meticulously monitoring and adjusting an organization’s mail-flow behavior in order to establish a reputation for the volume and interval at which the user will be sending emails.

Without doing this, your domain could be flagged as spam by recipients, suspended by your email provider, or globally blacklisted.