Thank you for choosing mNotify. There are 3 types of SMS bundles available on our portal. The PROMO bundle gives you the liberty to type a specific amount you want to purchase while the BASIC and PRO have fixed amounts already stated. PROMO - Valid for 30days. This bundle expires after 30 days if not exhausted. 30 days count starts from the day of purchase BASIC- This bundle does not expire PRO - This bundle does not expire