A family of Microsoft relational database management systems designed for ease of use.
In addition to what Hans said:
> it = it + r!email + ","
This is incorrect. In VBA the string concatenation operator is "&"
Getting away with it depends on language features that may change over time. Rewrite this as:
it = it & r!email & ";"
(note how I am separating email addresses with semicolon as is the standard)