This list contains our public IP addresses. You may add these to your networking equipment (hardware or software) to whitelist our Manuscript and Kiln On Demand environment. This is helpful for receiving email notifications, retrieving email via POP3 or IMAP if you’re using Manuscript mailboxes, using the service itself, or using other outbound services like Webhooks.
Outgoing email (like Manuscript email notifications) will also originate from these subnets, which may be useful for you to enter into your spam filter.
This website is useful to get a list of all the IP addresses based on the subnet range identified above: http://jodies.de/ipcalc
You can also include our SPF records per this article.