Is there any one who has integrated outlook with appian to fetch mails and store

You can configure Appian to fetch mail from a mailserver like exchange or any imap server. Each fetched mail can start a process or be sent to a receive message node in a running process. From there you have access to the parts of the email.

You can configure Appian to fetch mail from a mailserver like exchange or any imap server. Each fetched mail can start a process or be sent to a receive message node in a running process. From there you have access to the parts of the email.