How can we improve WHMCS?

Within my organization and other large enterprises, they often use single email accounts with multiple email aliases. Each of these aliases are filtered and moved into a subfolder. Monitoring and alerting systems check these subfolders through an IMAP connection. Additionally, since hosted email services, like Office 365 and Gmail, offer IMAP connections and the ability to create aliases, it's cost effective to create (and pay) for a single mailbox with multiple email aliases, such as help, billing, support, etc.

Example:

Account Username: admin@example.com
Alias 1: help@example.com
Alias 2: support@example.com

INBOX: (emails to admin@example.com as left here)
-HELP: (emails to help@example.com are moved here)
-SUPPORT: (emails to support@example.com are moved here)

IMAP connection syntax: https://www.electrictoolbox.com/open-mailbox-other-than-inbox-php-imap/