The To property adds to the list of principal (To) recipients for the NewMail object. Write-only.
objNewMail.To
String
The value you use to set the To property can represent a single recipient or a list of recipients. Each recipient must be represented by a full messaging address:
"useraddress@company.com"
Multiple recipients on the list are separated by semicolons:
"user1@company1.com;user2@company2.com;user3@company3.com"
If both the To property and the To parameter of the Send method are supplied, the NewMail object is sent to all recipients on both lists.