+[[!img notmuch-logo.png alt="Notmuch logo" class="left"]]
# How to...
Some tips about how to do some useful things with notmuch, and the
site](http://gmane.org/export.php), we can download an mbox file, which we
can then convert to maildir using mb2md or other utility.
+Please note that mail delivered by Postfix will have envelope headers
+that may cause notmuch to complain about "single-message mbox files".
+Removing the first line from the message or passing it through
+reformail will solve the problem.
+
## <span id="special_tags">**Take advantage of tags that are special to notmuch**</span>
See [[tags special to notmuch|special-tags]].