The AIM Mail is developed by AOL email to provide the users with a more user-friendly experience. However, you can set the AIM Mail on another email client to send or receive an email as per your choice. For that, you will have to complete the AIM Mail settings, and you can do it with the following steps.

AIM mail IMAP settings
AIM mail IMAP server: imap.aim.com
AIM email IMAP Port: 993
AIM email IMAP security: TLS/SSL
AIM mail IMAP Username: Your full AIM mail address with the domain name as @aim.com
AOL mail password: You full AIM mail Password (case-sensitive)

AIM mail SMTP settings
AIM SMTP server: smtp.aim.com
SMTP Port: 587
SMTP security: TLS/SSL
AIM Mail Username: Your complete AIM mail address.
AIM Password: Your AIM mail Password (Case-sensitive)