When using The Bandhelper "Email Users" function with the MS Outlook email client, it separates the email addresses with commas. Outlook requires a semicolon between email addresses. Workaround is to manually change commas to semicolons. Suggest adding a Setting to indicate "Using Outlook Email Client"
I'll take a look and get back to you on this.
Okay, there's no standard for this, but I just changed the commas to semicolons and hopefully that won't break the compatibility with other email clients.