CatMail is the official University of Arizona email system for currently enrolled students. Provided by Google, there are multiple ways to access the student mailbox.
Web Configuration
Access CatMail from any browser at http://catmail.arizona.edu/.
Mobile Configuration
CatMail can be configured to run on any mobile device that supports Modern Authentication. UITS has provided details on how to do this at https://uarizona.service-now.com/sp?id=kb_article_view&sysparm_article=KB0010451
Desktop Configuration
Standard desktop clients such as Windows Mail, MacOS Mail, Outlook or Thunderbird may also be used to access CatMail. Instructions for configuring are available from UITS at https://uarizona.service-now.com/sp?id=kb_article_view&sysparm_article=KB0010181