Can anyone suggest me some good email service provider other than Aweber or MailChimp. First I used mailchimp and then aweber but both failed my expectation when they it comes to send mails to large email list such as 10-30k.
Try using 'Get Response'. You will have to pay around $250 monthly price to send emails to 50k subscribers. Yeah, its a bit pricey but they deliver good service.