Atom Tickets offers $5 Off Any Movie (Select Theaters & Showtimes) when you add 1x ticket to your cart and at checkout apply code: GIFT. NEW ACCOUNTS ONLY. Gmail dot com trick worked for me.
Note, tickets are available for select locations and may vary depending on location; please check your local zip code for available movie theaters & showtimes. Some restrictions may apply. You must be logged in to your account to apply a promo code; limit 1 code per transaction.
gmail dot com trick worked for me