How long may I save my purchased Credits? Melissa Carron May 03, 2018 19:59 Updated Follow Purchased credits never expire. If you are on a monthly plan, your credits reset at the end of each billing period. Related articles Do you charge any fees? Am I required to sign a monthly contract? Confirmation Auto-Response How much do incoming text messages cost? Can you forward incoming texts to my personal mobile phone? How much do text messages cost to send using Group Texting? Comments 0 comments Please sign in to leave a comment.