Android
You can bind an email to your account on your current device:
After logging in, tap ‘More’ (P1) - ‘Account’ (P2) and choose a binding type (P3), then follow the steps to complete the binding.
IMPORTANT:
You can bind your account to an email address, a Google or a Facebook account at the same time. But one email address (or Google and Facebook account) only corresponds to one account.

iOS
You can bind an email to your account on your current device:
After logging in, tap ‘More’ (P1) - ‘Account’ (P2) and choose a binding type (P3), then follow the steps to complete the binding.
IMPORTANT:
You can bind your account to an email address, a Google or a Facebook account at the same time. But one email address (or Google and Facebook account) only corresponds to one account.

Android
(P1)
(P2)
(P3)

iOS
(P1)
(P2)
(P3)