You don't have to delete all emails on my iPad, but perhaps the iPhone is different.
So the revised script would be:
From each Inbox...
[on iPhone first tap Edit, Mark All Read]
Select first email, adds dot
Drag down on email list
Deselect first email
Wait a while
Drop into Trash
Kept trying the mark/move thing and it never worked. Deleted both my email accounts and re entered them in very little time. problem solved. Apple still needs to provide a delete all feature and a way to mark everythig from one spot to another to be deleted. Not sure what may happen next. Will have to delete things regularly. The problem was that when I deleted mail on my computer, it did not delete on my phone even though I have things turned on in I cloud. I use two mail accounts but I know that s not unusual. I will check my settings on both phone and computer one more time.
The whole thing is incredibly frustrating as I get so much spam everyday. To "delete all" would be heaven! Or, better, to be able to select all, then deselect a few keepers, THEN delete all the selected emails that are left would be great. I try the workaround (select one, hold down move, drag the list down, deselect the email, release the move button and wait) -- it is obviously doing SOMETHING, bet before I can get to the part where I move them to the trash, the Mail app crashes. EVERYTIME. Come on, Apple!
It is incredibly stupid taht we have to engage in this conversation...BUT it does work -at least on my Ipad with IOS-7.
You must do this in the proper order:
I suggest you CLOSE out your email application and then open it.
Click edit so the emails show up with the circle to the left.
Mark all emails as read. --(THIS STEP IS EASILY FORGOTTEN IN THE PROCESS)
Select the first email by pressing the circle.
Then press and hold the Move at the bottom...DO NOT RELEASE IT!!!
While holding the Move deselect the first email.
Continue to hold the MOVE button for maybe 15 seconds.
Then release the Move Button.
Your top email (on right portion of screen) will turn gray.
Then the right portion will display a "stack" of emails.
If you have a lot of emails you have to wait some time while the process occurs.
Eventually the screen will come up to ask where you want to move them.
Select Trash and all will move there as a batch.
The Trash Folder has an option to Delete All--at the very bottom after your last email.
Tricky but it works...at least for me.
Come On APPLE--this can't be that tough to streamline!!
all these years I put off trying any Apple product but was seduced into getting an iPad ... and it ALMOST works on work trips as well as a laptop for my needs ... and I was waiting to see why everyone says Apple is so sublime, no viruses, no blue screen of death and so on. Instead there have been numerous upgrades each of which created new problems and now this positively primitive stupid problem ... what is this nonsense, we have to fool around pressing one key and swiping and slowly fighting our way through this absurd maze to work out for ourselves how to get the most basic of functions to maybe work some of the time, possibly, after adding eye of newt and toe of frog? Are they going to introduce Pong in the next iOs upgrade or perhaps suggest we start chat rooms? I am proud to say I still remember my DOS but ladies and gents, this is kerrazy.
I found that using the edit button on the right side of the header bar above the email messages will allow you to check multiple emails before archiving. Found it here: http://ipad.about.com/od/iPad_Guide/ss/How-To-Delete-Email-On-The-Ipad.htm