During last month's SXSW festival Marvel and comiXology announced they would be giving away more than 700 of their number one issues. However, the high demand crashed the company's servers and forced them to postpone the promotion. This morning the company held true to its promise and announced that it will be sending out invites to download the comics in batches to reduce server load. Customer's interested in accessing the free comics must sign up for an account on Marvel's promo page before midnight EST on April 9, and can expect to receive an invite by April 11.