Subject: Test combined filenames
From: [email-masked]
To: [email-masked]
Date: Sat, 07 Dec 2019 19:00:27 +0000

yip, filename may be given twice,
seen this way in Kopano.

normally, both filenames will be the same,
for the test, we use different filenames,
we define that `filename` has a higher precedence.

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