Drey Tee

Looks good if agents are assignees before answer and ticket gets attached to the agent until Solved.
Otherwise (we have  few agents who answer tickets freely on their shifts and by the time reporte generated assignee can be Agent#1, but first reply time was big and Updater was Agent#2.
How can I get a report with First reply time values by real updaters of these first replies?
Tried to use different datasets:
Tickets: don't have 'Updater' field,
SLAs: don't have 'Updater' field,
Ticket Updates: doesn't have 'First reply time' field.

Please advise.

Can I add a yesterday date for previous day report?

Totally agree with all commenters.
It's ridiculous to send such a message even to colleagues and of course to customers.

Any workaround maybe?

Totally agree with all commenters. Explore still lack such feature.
Please prioritize the task to implement this faster

Just wanted to add my 5 cents: 
It's really frustrating when Pausable update time doesn't really pauses after setting status to On-hold (this status really means "waiting for a 3rd party", so the timer shouldn't run). Please, ZD, make the Pausable Update time pause in th On-hold state the same way it is paused in Pending state. You can make it optional of course to not break existing workflows.

Absolutely agree with all people in this topic. 
When export screws the data you see in report/dashboard - it's really unusable.
Please raise this issue priority.