Most IMAP systems do not support administrative credentials.

However, here are some systems which support administrative credentials over IMAP:

1. G Suite supports OAuth authentication. Click here to learn more.
2. Some versions of Novell GroupWise support Trusted Key authentication. Click here to learn more.
3. Some versions of Sun IMAP support ProxyAuth authentication. Click here to learn more.
4. Some versions of Exchange IMAP support admin authentication. Click here to learn more.

If administrative login is not available, you may want to:​​

1. Request credentials from each user.
2. Reset mailboxes to use the same password (this will lock users out).
3. Have us automatically request credentials from end users. Click here to learn more.