Edit: a more frequent problem started popping up. It sometimes won't display that I got new mails. Despite me even manually checking the folder and showing a new time stamp for checking the mail. Troublesome when I'm waiting for something important. It's not a problem with mobile data or WiFi since everything else works (Latest update is installed) my favourite mail app. you can connect multiple accounts and it reliable notifies you of new mails and lets you send mails without trouble.