index.js
function addToBlackList(callback, emails, comment){
    if ((emails===undefined)||(!emails.length)){
        return callback(returnError('Empty email'));
    }
    if (comment === undefined) {
        comment = '';
    }
    var data = {
        emails: base64(emails),
        comment: comment
    }
    sendRequest( 'blacklist', 'POST', data, true, callback );
}
function addToBlackList(callback, emails, comment){
    if ((emails===undefined)||(!emails.length)){
        return callback(returnError('Empty email'));
    }
    if (comment === undefined) {
        comment = '';
    }
    var data = {
        emails: base64(emails),
        comment: comment
    }
    sendRequest( 'blacklist', 'POST', data, true, callback );
}
Add email to blacklist

@param callback
@param emails
@param comment