Dropbox not necessary
I continue to see the following Dropbox every time I clicked open your app. It says:
we have stopped sending emails to firstname.lastname@example.org due to an error received from your email provider. To turn your emails back on, please click here. To update your email address, click here.
The email address mentioned above does not exist at all. I have always received your emails via my email account with no problem. Please discontinue the Dropbox. Thanks.
Who installed Dropbox for you? Maybe this is the mail of the person who gave you the account, lol.