Oppo
Add Email Account auf Oppo
When a mailbox stays empty on an Oppo phone, the cause is rarely the mail app itself. Coloros treats every mail provider as a separate account that has to be registered in the system account manager first.
Gmail, Outlook, Yahoo, Yandex and generic IMAP or POP3 boxes, plus Exchange, all share the same registration path. Once an account type is confirmed there, Coloros handles login, sync intervals and contact or calendar sharing for it automatically.
Open Settings ➔ Users & accounts ➔ Add account ➔ choose the account type and follow the on-screen steps for that provider. For Exchange or company mail you usually need the server address and domain from your IT admin; for Gmail, Outlook and Yahoo a normal sign-in is enough.
If an account is added correctly but messages still lag, check the sync settings for that specific account instead of removing and re-adding it. Removing an account also deletes any locally cached mail, contacts and calendar entries tied to it, so treat that as a last resort.