Multiple duplicates being created in Recovered Messages
Following an email server upgrade from my ISP whenever I create a new email multiple duplicate copies of that email are created in Recovered Messages. It seems to create a new email about once every 30s for the duration you are editing the email.
Apart from the space consumed the main issue is that search results are clogged up with loads of duplicates.
I have tried to "rebuild" that mailbox but to no avail. Any suggestions? Thanks!
I'm using Mac OS High Sierra 10.13.4 and MacMail.
iMac, macOS Sierra (10.12.2)