@reolink-fiona It is a RLN16-410, Hw No. H3MB02.
I don't know what firmware version I was on, I am currently on 2.0.0.4725_1724_20120700. I bought the unit September 1, 2017 and had not updated the firmware until this month.

A few days ago I updated to the latest firmware and I am regretting it. Under the old firmware, the email notifications that were sent when motion was detected all had the same subject, which made for a nice simple thread to review in my inbox. Now with the new firmware, the email subjects are specific to the camera with date and time. Because of this, I no longer have one thread of emails, I have hundreds of individual emails.

Is it possible to change the subject in the system or can you provide me with an older firmware I can rollback to?