Following are the various types of reminders you can set:
For all Payment Links This is an account-level setting and is done from the Settings → Reminders tab on the Razorpay Dashboard. Reminders for all Payment Links are sent at similar time intervals. For example, 2 days after creation or 3 days before expiry.
If you have set an expiry date for the Payment Link, you can configure only one reminder based on the expiry date. For example, if you have issued a Payment Link with an expiry date of 30 Nov, you can set a reminder below.
If you have not set any expiry date for the Payment Links, you can configure a maximum of 2 reminders to be sent after the issued date. For example, if you have issued a Payment Link on 25 Nov, you can set 2 reminders as shown below.