Fix BlueMail push notifications on Sony Xperia
Published
Menu names differ between software versions. If a path here does not match your phone, search your Settings app for the setting named in bold — it is the same setting under a different label.
Xperia software is close to stock Android with one significant addition: STAMINA mode, which restricts background data for everything that is not exempted.
Set BlueMail to unrestricted
Settings → Apps → BlueMail → App battery usage → Unrestricted, or Settings → Battery → Battery optimisation → All apps → BlueMail → Don’t optimise on older builds.
Check STAMINA mode
Settings → Battery → STAMINA mode.
If it is on, either turn it off or confirm BlueMail is exempt. STAMINA also switches on automatically at a battery threshold you may have set and forgotten — mail that only lags when the battery is low is usually this.
Turn off Adaptive Battery
Settings → Battery → Adaptive Battery, where present.
If mail still arrives late
- Confirm notifications in Settings → Notifications → App notifications → BlueMail.
- Check Data Saver is not restricting BlueMail: Settings → Network and internet → Data Saver → Unrestricted data.
Push Settings for other devices
ASUS
ZenUI keeps an auto-start manager in Mobile Manager alongside Android's battery optimisation. BlueMail needs clearing in both.
Google Pixel
Pixels run stock Android, so two settings cover it: set BlueMail's battery usage to unrestricted, and stop Adaptive Battery from demoting it.
Huawei, Honor
Set BlueMail's App launch to manage manually and enable all three switches — auto-launch, secondary launch and run in background.
Motorola
Motorola runs close to stock Android: set BlueMail's battery usage to unrestricted and turn off Adaptive battery.
OnePlus
OxygenOS adds sleep standby optimisation and deep optimisation on top of battery optimisation. Turn off all three for BlueMail.
Oppo, realme
ColorOS and realme UI need auto start-up, background running and power saver all set for BlueMail before push arrives reliably.