OK. Try running Process Monitor:
download Process Monitor
Save it to your desktop Close as many programs as you can. Run Process Monitor by right clicking and Run As Admin.
As soon as it starts, File, then uncheck Capture Events. Edit, Clear Display, Then Start up QB and get it ready to send an email (or whatever is failing). File, check Capture events then quickly have QB send the email. As soon as it fails, File, then uncheck Capture Events. (The logs get very big quickly so we try to limit logging to just the time period of the error.)
File, Save, All Events. You can use the native format. Give it a name you can find again. Close Process Monitor then zip up the log you saved.
You will need to use a file sharing service so you can upload the file, send me the link then I can download it. (It will be too big for the forum to handle.)
Pick one of the free services unless you have one already. http://www.freemake....-fast-and-safe/
Then post the link to the file. (Make sure you have allowed other people to see the file - some of the services default to private mode unless you tell them otherwise.)