X-OfflineIMAP prevents turning mails with several Gmail labels into hardlinks

[Iain Dalton]

On Mon, Apr 4, 2011 at 6:45 PM, Sebastian Spaeth <Sebastian at sspaeth.de> wrote:
> OfflineImap supports this extension in it's latest -rc and will have
> that support in the next release. When an IMAP server supports UIDPLUS
> (which basically all but Gmail nowadays do), we don't insert headers
> anymore and leave your mail alone.

Do I need Gmail to support it, or just my local IMAP server, Dovecot?
Because the latter does at least.