New Problems with MIUI Mail apk.

Jul 7, 2014
I have a Mi3 with the version MIUI 4.7.25, I used to have the same username for me mail accounts, but in this version I can not have two accounts with the same username ( and It is strange because previously I have used a MIUI version of and I can do it.
Now I should use another android apk to avoid this problem but I like the mail MIUI apk . I dont know if I dont configure the mail apk properly or it is a bug.
Could you help me?
Thanks in advance.