Hi,
In general, if the app is not checking mail (the default is once every 15 minutes), then the most common culprits are: – For Android 6.0 and newer, its so called Doze mode – Memory optimizer apps and battery optimizer apps (e.g. Clean Master) – Sometimes those are third party apps, sometimes built into the phone’s system software (Xiaomi, Huawei, possibly others) — Android 6 and newer and its “Doze Mode” Doze Mode is where Android will not let apps run in the background as often as they need to while the phone is stationary.
This kicks in after a few hours on Android 6 and sooner on Android 7.
The app will prompt you to “whitelist” (exclude) it from this “Doze Mode” within a day after installing if it detects Android 6 or newer.
To check, please bring up AquaMail settings -> mail, receiving.
If the app is not already whitelisted, there will be a green panel / button / message / prompt asking you to do this.
If you still have problems, please email us at support @ aqua-mail . com.
Thank you,
Nadia