[Mimedefang] MUA for multiple senders

[WBrown at e1b.org]

The other day someone asked about an MUA that would support sending from 
different addresses.  Last night I was looking at my Mozilla Thunderbird 
setup where I have my primary home accoount, as well as my rarely used ISP 
email account configured in the same client.  If I selected the inbox for 
my ISP account, and then composed a message, the sender was shown as my 
ISP email address.  In my primary account, it used that email address. 

Hope this helps the person that was recently asking about this.

(This was on Windows, say whether this works in other versions)

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