06:56, 15/09/2022
Yes, you can send messages to a person on Snapchat even when it is pending. However, the receiver will not be able to read the message until they accept their request as a Freind.
Read more here:- https://worldzo.net/what-does-pending-mean-on-snapchat/
Also read:- https://worldzo.net/how-to-change-snapchat-username/