This am asking as I have no idea on it. Now all you know mails should be of CAN SPAM compliance. As I read this http://www.clickz.com/3400391 which says giving physical address and include opt out link. Now I just want to know how we can make a opt out link while sending mails from free mail services like gmail or yahoo mail and also if we have our own domain mails. I hope many of us may have the same question and at least few guys who can throw some light on it.
I use aweber for it and it includes it at the bottom automatically. Pm me and i will send you the link as i have been using them for four years and they are great. sam X
You should invest in a good auto responder such as aweber as they take care of all that CAN SPAM stuff for you.
What you can do for free email accounts is to have an unsubscribe note at the bottom and tell them to send a blank reply back to the email address to opt out... But ideally you should get an autoresponder.
Just like others said, your best bet is to use an autoresponder service. For a paid service, I highly recommend Aweber or Getresponse. For free solution, you can try http://freeautobot.com/. - Dynashox -
I tried email marketing on Gmail and i realized they limit the allowed number of mails a day to 500. Well.. Stopped doing it since then. Aweber is not free and i don't have that large volume of money to purchase an account. Yes. Its one of the best. AWEBER.