Subject says it. I have Claws Mail 3.7.6 and the "From" column shows "MyName" instead of "myname@mydomain". I prefer to see the email address, not the pretty print name. Also, sometime it shows <myname@mydomain> instead of just "myname@mydomain".

Afterthought:

Are you referring to the primary message pane which shows the list of emails or the individual email itself. In the primary message pane, my Claws displays the name, if one is configured, or the email address, if no name is configured. I also saw no way of changing this in the Preferences dialogs, but I will still look again.

The information below refers to the individual message pane.

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That's odd. I have Claws 3.9.0 on two computers (both running Slackware --Current) and, on both, it displays

From: Somebody Jones <somebodyjones@somewhere.com>

Assuming that there is a name in addition to the email address. If there is is no name, it will display the email address without the carets, like this:

From: somebodyjones@somewhere.com

I looked about in Tools-->Preferences-->Message View and a couple of other places, but didn't find any usual suspects. I'll have another look tomorrow.