For email we semi-integrated Horde.
Because of the Facebook and Gmail signups and logins I thought that email system needs to have it's unique login creditentals.
If we dont use FB and GG it may be fully integrated.

Now I am again recalling some words of Baloo , he said me sometime ago that he don't want to be dependent to FB or GG for the logins. Now I realised that he is right. Because at first it seems attractive, but then there are additional problems and limitations coming from them.

Yes UNA may have most of the things in house.

But I believe that the urgent thing for UNA is not integrations to this or that which will not benefit in general to all users, but the Android and IOS apps.