mail software on your own software vs a third party service?
 

putting an email collection box on blogs and tours - would it be better to install mail list software on my own server or use a third party service?

what mail list software is best and free? i only know 'php list'

thanks

salesforce.com

i use constant contact for mainstream. not sure about adult. I feel it works better. because you can see who opened it and who didnt, controls opt outs etc.