Emails are rarely a one-to-one communication affair. In this way I would like to be able to create a group that when entered into the "To:" field of the "send email" interface it expands to multiple recipients.

For example, If I need to email the maintenance planning team, there are 5 individuals on that team. "Maintenance-Planning" could be created as a mailing group or mailing list, automatically place the 5 members of that group in the field and would save a lot of typing. This would necessitate the creation of an address management interface within ClickUp, which has been requested already.