What does it mean when you send a Kik message and it says s?

This is from another website I just looked up real quick. The letters are there to give you more information regarding the status of your message and where in the process the message is at. read more

If you see an “S,” this tells you that your message has been successfully sent to the Kik servers from your device. A “D” lets you know that your message was successfully sent to your Kik Messenger contact. read more

S means that your message has been sent to the Kik server. D means that Kik has delivered your message to your friend. R means that your message has been opened and read by your friend. read more