If you want to get admin email address or store email address that is set in magento backend, you can get as following.
General Contact
Sales Representative
Customer Support
Custom Email 1
Custom Email 2
General Contact
/* Name */ Mage::getStoreConfig('trans_email/ident_general/name'); /* Email */ Mage::getStoreConfig('trans_email/ident_general/email');
Sales Representative
/* Name */ Mage::getStoreConfig('trans_email/ident_sales/name'); /* Email */ Mage::getStoreConfig('trans_email/ident_sales/email');
Customer Support
/* Name */ Mage::getStoreConfig('trans_email/ident_support/name'); /* Email */ Mage::getStoreConfig('trans_email/ident_support/email');
Custom Email 1
/* Name */ Mage::getStoreConfig('trans_email/ident_custom1/name'); /* Email */ Mage::getStoreConfig('trans_email/ident_custom1/email');
Custom Email 2
/* Name */ Mage::getStoreConfig('trans_email/ident_custom2/name'); /* Email */ Mage::getStoreConfig('trans_email/ident_custom2/email');