If you are a sales person or if you send a lot of emails to other people you need mailivery to
- Increase your sender reputation so more of your emails land in the inbox, not in the promotions or spam folder
- Increase the average response rate to all of your emails to symbolize to spam filters that your email account acts normally, and not like a sales account
- Keep your account warm by having constant email interactions in your account and thus, not losing trust by spam filters
