Both your Android Operating System and your Device’s specific ROM have “battery management” services that can interfere with BlueMail’s Instant Push Notifications and response time (among other features). Please see below how to easily whitelist BlueMail from these services.
Excluding BlueMail from Android OS Services that interfere with BlueMail's Performance
Android 6 and above have some new features built into the OS which might affect performance some applications such as BlueMail.
One of them is the "Doze" feature that turns off the Network connection if the device hasn't been touched or moved for a while.
Open the Settings menu on your device and tap Battery. Next, tap the more button on the action bar at the top right, and select Battery optimization.
On the Battery optimization screen, switch to the All apps list from the drop-down to view all of the apps on your device. Tap BlueMail from the menu and select Don’t optimize to exclude BlueMail from the Doze feature.
Excluding BlueMail from Device Specific Services that Interfere with BlueMail's Performance
Many devices manufacturers have their own built-in "battery management" services that can adversely affect BlueMail’s rapid performance and reliability. When BlueMail is being “managed” by these programs, Instant Push Notifications and Syncing/Downloading emails, are likely to be affected and delayed.
For this reason, we strongly suggest that you whitelist BlueMail from these type of services in order to enable Instant Push. Please choose your device below to see how simple this is:
How do I Enable Push on my Samsung Device?
How do I Enable Push on my Huawei Device?
How do I Enable Push on my Xiaomi Device?
How do I Enable Push on my Asus Device?
How do I Enable Push on my Sony Device?