We are having an issue with some of our Zoho users when they go into the Client Contacts section, open up a client, and select to see the email trail, some of our users can't see all the emails.  The only ones they can see are the ones they sent through Zoho, but not the ones they sent through Gmail

Other users can see all of the emails, whether they sent them through Gmail or Zoho.

Is there a setting that need to be changed to get this functionality working for everyone?

If you want to go into our system to see what I am talking about - open up 2 of our client contacts - 

Shawn Chute and Celine-Lise George

You will notice if you go in as me colin@fusion-recruitment.com you can see all of my emails and only a few of Allan Welyk's.  If you go in as allan@fusion-recruitment.com you can only see a few of Allan's and none of mine.

Mine set up seems to be working fine, but Allan Welyk's is not.

I look forward to your feedback.

Cheers,

Colin