If you want to send a message to your subscribers on the same day of the week every week then you can do it by following the instructions below.

1. Create an autoresponder.
2. Create a new message in that autoresponder.
3. Set the new message "Schedule" to the day you want to send it.
4. Edit the autoresponder properties as follows..
In the "What happens on completion" section, set "Action" to "Retain Active Status", "Loop to autoresponder" to be tha same as the autoresponder we are editing (you can only do this in edit mode, not when you are creating it new) , "Loop to message #" to "1" and "Loop interval" to "1" day.

This will now send the first message in the list to the subscribers in this autoresponder every week on the same day.