Hi, Tony,

While like you I would have expected the semi-colon to be a valid separator, it seems it isn't. I get the same error as you when I use it to enter a string of email addresses.

However, with any program that emails, I've learned that if a semi-colon doesn't work (Outlook's preferred separator), to try a comma. When I use this character as my separator, I don't receive the error and my emails send to each address in my string.

I'm using the Direct method also.