Email is one of the most effective marketing communication channels. $1
invested
in email returns an average of $38 in revenue
[https://www.campaignmonitor.com/resources/guides/email-marketing-new-rules/].
For sales teams, the importance is even more explicit. A single, well-crafted
email can mean thousands of dollars in potential revenue from a single customer.

Therefore it is critical that this channel to your customers and potential
customers remains open. A low domain sender score will ruin