Hello,
No, in my case emails are directly forwarded either from Outlook or Gmail. The problems seems to appear mainly for more complex emails (long conversations with multiple users + attachments etc., not necessarily large in size) although up till now I did not find direct correlation. I have started to experience that problem around the time that I have updated Evernote to the latest version. What puzzles me is that message from Evernote's servers suggesting that the problem occurs on their servers.