What else you can use
Reminders are great for one-time, same-day notes to yourself, but what else you can use?
Mark message as unread
If you read a message but don’t have time to address it right away, you can mark that message as unread. Marking a message as unread bolds the channel in your sidebar, and adds the line of the new message above the marked message.
Save your message
Save your messages so you can always come back to them. To see all of your saved messages, select the Bookmark icon in the sidebar. The sidebar opens to show the list of saved messages.
Send yourself a message
Send yourself important messages and never lose information.