- Added some significant debug code to folder/IMAP.py when saving a
new message with APPEND. This should make it easier to track down
bugs both in OfflineIMAP and in mail servers that implement this
poorly.
- Fixed adding of X-OfflineIMAP header when the message starts out
with no headers. (This should not generally occur.) This should help
with some "invalid literal for long()" problems.
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