Fix BlueMail push notifications on Tecno, Infinix and itel

Transsion’s phones — Tecno, Infinix and itel — run HiOS or XOS, and they manage background apps from a bundled Phone Master app rather than from Settings. Clearing Android’s own battery optimisation alone changes nothing here, because Phone Master overrides it.

Allow autostart

Open Phone Master → Toolbox → Auto-start management and allow BlueMail to run in the background.

Enable every option offered for the app. Without this, BlueMail does not restart after a reboot or after the system closes it.

Turn off power saving for the app

Settings → Battery Lab → Battery saving settings — turn off Power Saving Management for Apps.

Turn off the screen-off restrictions

Still in the battery or Phone Master settings, look for and turn off:

• Screen off push block — exactly what it sounds like: no notifications once the screen is off.
• Screen off sleep and Screen off scheduled push.
• Power Boost under Power Marathon, if your build has it.

These are the settings that produce the classic symptom on these phones: mail arrives the moment you unlock, and never before.

Lock BlueMail in Recents

Open Recents and tap the padlock on the BlueMail card.

If your build has App Booster in Phone Master, add BlueMail there too — it holds a small number of apps in memory, and mail is a good use of one of those slots.

If mail still arrives late

• Check Sleep Mode is off. On some builds it switches the phone to airplane mode overnight, which stops mail entirely until morning.
• Confirm notifications are allowed for BlueMail in Settings → Notifications.