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Simultaneous access with Pegasus and Outlook over IMAP

We use the Pegasus public folders for archiving and filing.
Since e.g. appointments sent from Outlook are not displayed in Pegasus, some colleagues use Outlook and Pegasus in parallel as mail programs. Unfortunately, simultaneous access to an account (with Pegasus directly and with Outlook via the Mercury IMAP interface) is not possible.


Mercury will prevent IMAP access to the account while Pegasus is open. Is it possible to change this way of working, especially since there should be no problems with Pegasus > 4.0 (see note when installing Mercury)?




If you use both the IMAP server and locally installed copies of Pegasus v3.x to access maiboxes, you must ensure that you never access the same mailbox using both at the some time.


So, you must not start a copy of Pegasus Mail accessing a mailbox that is currently being accessed by the IMAP server. Equally, you must not login via IMAP to a mailbox that is currently being accessed by a copy of Pegasus Mail.


Failure to observe this requirement may result in damaged folders and loss of data!!


Note that it is OK for multiple IMAP connections to exist to the same mailbox. The prohibition only applies to simultaneous access by MercuryI and Pegasus Mail. This problem was addressed in Pegasus v4.0, and only applies if you are using an earlier version of Pegasus Mail to access your IMAP mailboxes.


We use the Pegasus public folders for archiving and filing. Since e.g. appointments sent from Outlook are not displayed in Pegasus, some colleagues use Outlook and Pegasus in parallel as mail programs. Unfortunately, simultaneous access to an account (with Pegasus directly and with Outlook via the Mercury IMAP interface) is not possible. Mercury will prevent IMAP access to the account while Pegasus is open. Is it possible to change this way of working, especially since there should be no problems with Pegasus > 4.0 (see note when installing Mercury)? ----------------------------------- If you use both the IMAP server and locally installed copies of Pegasus v3.x to access maiboxes, you must ensure that you never access the same mailbox using both at the some time. So, you must not start a copy of Pegasus Mail accessing a mailbox that is currently being accessed by the IMAP server. Equally, you must not login via IMAP to a mailbox that is currently being accessed by a copy of Pegasus Mail. Failure to observe this requirement may result in damaged folders and loss of data!! Note that it is OK for multiple IMAP connections to exist to the same mailbox. The prohibition only applies to simultaneous access by MercuryI and Pegasus Mail. This problem was addressed in Pegasus v4.0, and only applies if you are using an earlier version of Pegasus Mail to access your IMAP mailboxes.

Hi Duke,


We are on Pmail 4.73 /Mercury 4.81 and I can confirm this behaviour. Simultaneous access is only working with different IMAP clients but not when Pmail is connected and has locked the mailbox. But with different IMAP connections it works fine.


Maybe it works when you are installing Pmail as an IMAP client, too. But this has not been tested by us until now.


Hi Duke, We are on Pmail 4.73 /Mercury 4.81 and I can confirm this behaviour. Simultaneous access is only working with different IMAP clients but not when Pmail is connected and has locked the mailbox. But with different IMAP connections it works fine. Maybe it works when you are installing Pmail as an IMAP client, too. But this has not been tested by us until now.
edited Nov 4 at 12:20 pm

We use an workaraound, too. Everyone who want to use Outlook and Pmail together, get an second local user name. The incoming mail folder, which is also accessed by Outlook, is then integrated as an additional mailbox for this user.


Folders -> Add mailbox to list...


A simultaneous access to an incoming mail folder with outlook and Pmail is therefore possible.


We use an workaraound, too. Everyone who want to use Outlook and Pmail together, get an second local user name. The incoming mail folder, which is also accessed by Outlook, is then integrated as an additional mailbox for this user. Folders -> Add mailbox to list... A simultaneous access to an incoming mail folder with outlook and Pmail is therefore possible.
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