DM / PM / Note to Self in Direct Messages

Hello! 

Hopefully a simple feature, because this is featured in Slack (picture attached)... 

Being able to message myself in direct messages / private / personal messages (DM / PM). 

With all the features. emoji, links, pinning... Slack also allows you to "save" someone else's message, which puts it in a separate category for followup later. Baby steps, though. 

But PMs to myself would be a huge feature with hopefully very little effort. 

Thank you!