Can I use a Reserved IP address to send emails via SMTP?

Reserved IPs do not support SMTP traffic. All outbound SMTP traffic originates from the public IP address of the Droplet. You can find more details about the limits of reserved IPs at our Reserved IP Limits page.

Droplets do not have a dedicated IP address.
You can disable the address on your Droplet from the command line or through updating your Droplet’s eth1 interface configuration.
Ensure your Droplet’s public and private network interfaces are correctly named eth0 and eth1.