Magento store the email addresses like sales, stores, order etc in the admin -> System -> Configuration -> Store Email Addresses. It is needed some time to get those email addresses to use somewhere in the custom email template or somewhere on the pages or on our custom script on the store. Here I am writing some sample code to get the values of those email addresses.

General Contact

/* Sender Name */
echo $name = Mage::getStoreConfig('trans_email/ident_general/name'); 
/* Sender Email */
echo $email = Mage::getStoreConfig('trans_email/ident_general/email');

Sales Representative

/* Sender Name */
echo $name = Mage::getStoreConfig('trans_email/ident_sales/name'); 
/* Sender Email */
echo $email = Mage::getStoreConfig('trans_email/ident_sales/email');

Customer Support

/* Sender Name */
echo $name = Mage::getStoreConfig('trans_email/ident_support/name'); 
/* Sender Email */
echo $email = Mage::getStoreConfig('trans_email/ident_support/email');

Custom Email 1

/* Sender Name */
echo $name = Mage::getStoreConfig('trans_email/ident_custom1/name'); 
/* Sender Email */
echo $email = Mage::getStoreConfig('trans_email/ident_custom1/email');

Custom Email 2

 
/* Sender Name */
echo $name = Mage::getStoreConfig('trans_email/ident_custom2/name'); 
/* Sender Email */
echo $email = Mage::getStoreConfig('trans_email/ident_custom2/email');

You can easily get the store email addresses from the sample codes provided above.