In ED - need advice on how to withdraw other apps

<p>I just want to make sure that I have this correct: Son was accepted ED to Swarthmore and he needs to withdraw from other colleges. He sent email to all the admission departments of the colleges he applied to asking to be removed for consideration. What I am asking is - is this all he needs to do? Should he also use snail mail? Thanks!</p>

<p>That's all my son did. I think that should be sufficient.</p>

<p>My son was accepted ED last year. He had a kind of unofficial pre-app in at one other college at the time. He emailed them to withdraw it. They emailed back and thanked him for letting them know. </p>

<p>I would email in the interest of timeliness, but it probably doesn't matter much as long you let them know fairly promptly.</p>