1. able to blast 5-6K emails per day
2. must be able to handle millions of emails with complete details of first name, last name, country etc.
3. show me how many times emails sent to one or many recipient so that I should not send them again.
4. automatically remove unsubscribed or people who requested not to receive any emails or any bounced emails - without any manual work
Some of the email software I have tried so far are - Send Blaster, Atomic Email Studio, Fast Email Delivery Engine, GroupMail etc. Though, these software are not bad but do not meet my all requirements!
Any suggestion will be much appreciated.