I have a set of custom forms written in vbscript that are used to manage contacts, quotes, etc and mass email them when needed. The issue I am having is specific to Outlook 2016. Upon completion of the vbscript, a comma separated list of email addresses is added to bcc on a new email. When the email is sent, outlook 2016 will give a bounce back with all of the email addresses listed. Only the first email appears to go through. I think this is related to the autocomplete contacts feature in newer versions of outlook. If I send from outlook 2007, the email goes through without issue. I need 2016 clients to be able to send these as well.
I'm not sure what other information would be relevant to helping you help me, so please let me know.