Internet Mail Client Control FAQs/Objects/Header Object
I'm getting runtime error 8000020AH (errInvalidAddress) what's wrong?
ID: S13E13 DATE:
By design the library enforces strict syntax checking on values (as defined by the appropriate RFCs) in the address (To, From etc) fields and properties. If you try to set one of these fields or properties to a syntactically incorrect value the Header object will raise this error.