Member expiration reminder function

1, SMS reminder: merchants can send expiration reminder SMS to members through SMS platform to remind members to renew or upgrade their membership cards in time. SMS reminders can be sent directly to members' mobile phones, with high timeliness and visibility.

2. Email reminder: The merchant can send an expiration reminder email to the member to remind the member of the expiration time of the membership card and provide relevant information on renewal or upgrade. E-mail reminders can be displayed in members' e-mails, which is convenient for members to check at any time.