To enable emailing of all posts on a specified thread:

a) User Options -- Subscribe / Unsubscribe -- click yes on Do you want all replies to your favorite topics emailed to you?. Then scroll to the foot of the page and click submit.

b) check the box against Add this thread/topic to my favorites when making a post or click on Favorite Thread! (toggle) in the Extra Information box when viewing the thread.

To enable emailing of all replies to your posts:

a) User Options -- Subscribe / Unsubscribe -- click yes on Do you want replies to YOUR posts emailed to you?. Then scroll to the foot of the page and click submit.

To receive a daily archive of posts on a forum by email:

a) User Options -- Subscribe / Unsubscribe -- scroll down the page and click the S radio button against a forum to which you want to subscribe. Then scroll to the foot of the page and click submit.