Contacting customers with invalid billing information is definitely a good tip. I was surprised to find out at 17% of our subscribers for StartupThreads were de

Contacting customers with invalid billing information is definitely a good tip. I was surprised to find out at 17% of our subscribers for StartupThreads were delinquent. Some had cards stolen, numbers changed, expired, etc. Wish I had taken their phone numbers to reach out easier, but sending a few friendly reminder emails will help.