I have an application, which uses pop3 to read the messages from the mailbox, and it has been working fine for so many year. We recently have started changing this application to use java mail IMAP 4 instead of Pop3.

Primary reason for that :- Is we want to better meet out SLA, so we have decided to go with the 2 instances of this application, and hence decided to use IMAP4 to concurrently accessing the mailboxes via IMAP4.
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