Quote:
Originally Posted by Terry
I thought it should have "imap4flags
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It's there, perhaps scrolled off to the right. In any case, FastMail autogenerates the require line for you, with the extensions they have installed. I just copied that line from their "Edit Sieve script" UI. I'll re-flow the text.
It turns out the addheader breaks other Sieve extension commands (like fileinto) so I really think the editheader extension is the culprit here.