Currently Being ModeratedDec 24, 2013 10:13 AM (in response to Ray Allen)
Same issue here, with 2 accounts I have a 700MB app file size, with a 15GB phone and very little excess it's rediculous that my only options are to delete all of my text message history (holding 1.5GB) and am stuck unable to delete the excees Mail file size. Really makes me hate iOS7.
I am using the same iphone as you 4S ISO7. There was a number of steps I took to clear up the excessive memory usage. My mail was taking up 5.2 gigs and I was able to reduce it down to 98 megs. I have five different e-mail accounts so it took a bit of time.
First I went into each inbox and selected all the mail then tapped EDIT then tapped MARK ALL then tapped FLAG then went back to EDIT then MARK ALL then UNFLAG then I deleted all the mail. What this does is resets the mail to zero. If you have already deleted all your mail just send yourself one small message and follow the above steps.
Secondly I deleted each mail account seperately (one at a time) checking the Mail usage each time. Each time I deleted an account the usage numbers went down.
Thirdly I added my accounts back watching my usage each time I added an account.
Last, I backed up my iphone to Itunes and discovered that not only did my Iphone usage drop by the numbers above but the Document & Data usage displayed iin Itunes dropped to almost zero from 5.39 gigs.
Hope this is helpful.
I have done a thorough search into the problem and for me it has been fixed.
The problem for me, was that each folder was holding a large amount of emails.
I needed to delete large emails, especially with photo and graphic attachments, from each folder (INBOX, DRAFTS, SENT, and TRASH).
Only after deleting emails from ALL these folders did I get my usage down.
The one folder that hung me up longest was the SENT folder.
I hope you find your solution.
I tried deleting the eMail Accounts and setting them up again, with no success.
The solution that worked for me was to "Reinstall" iOS 7, and then Restore the data from my backup.
I gained 8 GB back from this method, and never lost any data.
A big culprit was my mail and I went from 4 GB to around 500 MB.
Just thought I would share what worked for me.
Well, after spending hours trying to find an answer to this, I have deleted my email accounts on iPhone and then added them back. This gave me 2.1GB more space. Hope that this helps someone until Apple comes up with a fix.