+gchar * modest_text_utils_get_display_size (guint size);
+
+
+/**
+ * modest_text_utils_validate_email_address:
+ * @email_address: a string
+ *
+ * validates the email address passed as argument
+ *
+ * Returns: TRUE if the address is valid, FALSE otherwise
+ **/
+gboolean modest_text_utils_validate_email_address (const gchar *email_address);
+
+/**
+ * modest_text_utils_split_addresses_list:
+ * @addresses: a string
+ *
+ * obtains a GSList of addresses from a string of addresses
+ * in the format understood by email protocols
+ *
+ * Returns: a GSList of strings
+ **/
+GSList *modest_text_utils_split_addresses_list (const gchar *addresses);