[exim] Time to force delay between message

Team,

Is it possible to force a time delay. For example my email account user @
domain.com is sending 3-4 emails to the same receipient in 1 second. Is
there a setting in exim to insert a delay by ex: 10 seconds.

Actually I want to insert a delay between each message that goes out any
remote destination.

Thanks
Deepak Sharma