You need to provide more details, because just updating mine doesn't replicate your issue at all, I went from
57.33.1 to 57.34.1, which is the latest spar and it had no affect at all on the Email icon, or the service, it works just like it did before the update.
The only version newer than what I loaded is 57.34.15, but that is a one-off release for a specific customer so I won't be installing that in the lab.
HTTPs was enabled before and after the update, disabling https also changed nothing for the email icon or its use.
I tried this on a C7030 and a C405 (68.34.01)