I've been using MailDroid Pro for a long long time with absolutely no problems on my GS 8+ until a couple of weeks ago at which point it's gone really bad...like milk left outside the fridge. First, it will no longer open PDF attachments to emails (this is a damned disaster for me as all of the attachments to business emails are all PDFs. when I click on the PDF attachment paper clip, an error message comes up that says "Error: [AUTHENTICATION..." Of what??? Anyone know? Yes I have Acrobat installed and I've uninstalled and reinstalled the app. No joy. Last night I got the 8.0 up grade. Some things really do work better and seemingly faster, but this email thing, won't cut it. Second, it won't download the latest emails. The last date on both email accounts are weeks ago. I've written to the devs in the hopes there's a fix because I've been using this app with no problem for a long long time and now, all of a sudden, it turns to &#*$&^ In the mean time, can anyone recommend something reliable, simple GUI, able to manage (funny, I type mangle) more than one email account? Thanks in advance. I'll post if I hear anything useful from the devs and I"ve left this comment on the play store page.