Create Inbox Checker Script

You need to create an inbox checker script for T-Online POP3 or IMAP. The script will check multiple SMTP Accounts in the way that a test email is send to a T-Online account and if it hits inbox (e.g. after 30 sec), it will save the account. The SMTP Accounts will be provided in a specific format which the script must be able to use. Also, the output format must be in this specific format. The script will run on CentOS 64bit VPS. You can code it in Perl/PHP however it must be really fast (there will be multiple SMTPs accounts checked if they are inboxing at the T-Online account).