The date of change of the config does not depend on write mem. The date of change will be in the show run only if the router believes that it really knows the correct time and date (either from the clock set command or from learning time via NTP). And the name of the person making the change will only be in show run if the authentication process included user name.
As I read the original question he wanted to know about sending messages to someone on another router or switch. The send command will send messages to the local device. But I do not know of a way to send a message to a remote router or switch.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...