Merge #1613 into sdk602patch0911 from refs/changes/1613/head

Merge #1613 into sdk602patch0911 from refs/changes/1613/head

合并imeimap代码

* refs/changes/1613/head: (1 commits squashed)

  - 合并imeimap代码

Signed-off-by: aliyun8003852482 <1224667075@qq.com>
Reviewed-by: Caisking <3449750381@qq.com>
Reviewed-by: 罗正 <1732036298@qq.com>
Reviewed-by: aliyun8003852482 <1224667075@qq.com>
Reviewed-by: snickersun@163.com <accounts_62b90f7fcf51ade33b6f628e@mail.teambition.com>
Reviewed-by: aliyun6865282430 <1624952103@qq.com>
Merged-by: Caisking <3449750381@qq.com>
link: https://codeup.aliyun.com/64191456b9581d62e8f81ac0/FD230/change/1613