I have several Verizon email accounts. With one account, the emails are very slow to load in the stock email app. Last week, it was 'spinning' for 6 hours until they loaded. I can access the emails fine using the Verizon app and they load fine in Outlook on the PC. This issue started about 6 months ago on my Note 4. It is now happening on the Note 7 and also happens on my Galaxy tablet. I've deleted and re-added the account and cleared email cache, but didn't fix. Verizon tells me it's an email app problem, which I don't buy but as other Verizon email accounts load fine. Samsung tells me it's a Verizon issue. Any thoughts?