I have been involved as an email marketing affiliate in some capacity or another since 2007.Email marketing is a one type of direct marketing which is done with the help of Internet mail. It's means that people do communication with each other with help of Email. People can send mail in separate groups and selected person in same time.
Here are some tips from my side:
1. Utilize email marketing campaigns instead of newsletters.
2. Make the offer at the right time.
3. Match your email to your brand.
4. Make your emails engaging.
Since 2007-2012, i tried many kinds of email marketing software,such as icontact, awber and iKode newsletter software
iKode is the free email marketing software i used for more than 3 years. It is not expensive and easy to update.It is written by php, very easy for technician to use.Namely, sometimes, it was called free php newsletter script