In order to determine the best way to prompt for and store a javax.mail.internet.InternetAddress, I began researching these pages, which are broken to various degrees:
https://cwiki.apache.org/confluence/display/WW/Type+Conversion https://cwiki.apache.org/confluence/display/WW/Conversion+Annotation Both show "Error formatting macro: snippet: java.lang.IndexOutOfBoundsException: Index: 20, Size: 20."