Just to be clear, the messages that are not going to the copies to self folder are only the ones being sent as the problem gmail account?

If this is correct, I would enable the option to ask at send time whether to make a copy to self and test that functionality.  Keep in mind that these settings are identity specific so if you are using a unique identity for the gmail account be sure to check/change the configuration setting while as that identity.

As for messages not appearing in the new mail folder, if coming down via POP3 then they only way they don't appear is if they are diverted by a filter.  So either they are not being retrieved or there is a filter that is diverting them.

To test I would create create a new folder called GMAIL_TEST.  I would then make the first rule in the new mail folder open filter list one that checks the To: header for "gmail" and moves those messages to the GMAIL_TEST folder.  New mail filters are not identity specific so this rule should insure that any message coming down from a gmail server will be moved to the GMAIL_TEST folder.  An autofilter may override this rule but you have checked for those so this test should confirm whether messages are coming down.

Once you have accumulated a few messages in the GMAIL_TEST folder I would disable the test rule then move the messages to the new mail folder to see what happens.  If they don't appear, or disappear after closing and reopening the new mail folder, then you know you have a filter somewhere that is moving them.

This follows on from my problems with Copies to self. After working perfectly for a while we now have the same problem again. It would seem that any messages sent from our gmail address are not received into Pegasus, which presuably links to why they don't appear in the copies to self folder either. Messages sent to the address are received. I have reindexed the Copies to self folder and also checked the settings in the account. They match those in a copy on another computer, which is working fine with different gmail address. I have reinstalled Pegasus and copied the many folders from the Mail folder into the new copy to no avail..

Any ideas?

Could you provide additional info as to what "messages sent from our gmail address are not received into Pegasus" means.

Either to check that messages are getting through, or by sending a message, using the same the Gmail address used in Pegasus, from another device such as an iPad. In either case the messages are not received in Pegasus but do appear in the web based Gmail inbox. This is not a permanent problem but has arisen at the same time as messages sent from Pegasus are not stored in the Copies to Self file, in spite of the box asking for this appearing as usual.

Messages sent from a different email address, even a gmail one, are properly received in Pegasus.

I still do not understand what you are trying to do. I take it that you have a Gmail account set up in Pmail. Can you send and receive mail with that account?

The way I understand the problem, any message that contains the problem gmail address, whether incoming or as a copy to self, is not appearing in the new mail folder or the copy to self folder.  If this is the case, look for an autofilter that is diverting these messages.

To view autofilters right click on any folder name then select Autofiltering > Manage autofilter folders.

I have looked there and there are no filters in place.

You are right in that the main problem is that sent messages are not being saved in the Copies to self folder. I mentioned the messages sent to self in case this might help indicate what is going wrong.