First Direct Mailing Advice?

[Felix Wisniewski]

Hey bigger pockets forum!

I created and sorted my list from list source and got about a list size of a little over 300 for my first mailing. I found a cool way to save time so I don't have to write all those letters and I can just scan them. I was just asking for some advice. Any things I should know. How many times I should mail? (How many days between mailing) Should I keep mailing the same list over and over? Should I purchase a new list every month? Any help would be great.