[stomachmonkey]

"email": return email_addr,

"email": "return email_addr",

enclose return email_address in ""

Also, check the form they are filling in, is the field name / value return email_address or return_email_address

Note inconsistent use of underscore between return and email

EDIT: on a side note, try to be more consistent in your use of underscores and capitalization structure. You've got like 3 different styles for the same element. Pick a style you are comfortable with and stick to it, religously. Makes like a lot easier.