Hey, try iKode Newsletter Software which is an web based email marketing software. It can help to design a template, send emails, people can subscribe through your website, double opt in option, track who opens the emails, setup automatic email campaigns, import members via csv, users can unsubscribe themselves and the like.
As the Christmas is just around the corner. iKode software provides 30% off. Take action at: http://www.phpnewsletter.org/ . Any issues, you can connect the support staff over live chat.
Hope this can help you.