[MlMt] Customising From or Reply-To based on Smart Mailbox settings

[— — Malcolm Fitzgerald]

On 15 Feb 2026, at 3:45, Bill Cole wrote:

> On 2026-02-13 at 20:14:50 UTC-0500 (Sat, 14 Feb 2026 14:14:50 +1300)
>  <mailmate at lists.freron.com>
> is rumored to have said:
>
>> As I manage my own domain name I'm able to make-up mail addresses to 
>> match the group or organisation I'm dealing with whenever I'm asked 
>> to provide one.

>> That works perfectly for receiving mail. However, when I reply to 
>> mail the FROM field is postmaster@ rather than my whatever_lol@ 
>> not-an-email address.
>>
>> I'd really like to have some way of auto populating the From or the 
>> Reply-to field without having to remember to use the Customise 
>> option.
>>
>> Are there any hidden tricks in Mailmate that I can leverage to 
>> achieve this?
>
> Not sure if it's enough, but if there's a pattern to the addresses you 
> use, and you know how to write "regular expression" patterns, use the 
> "Address Pattern" field of the Edit Account dialog box to cover the 
> addresses that *might* end up in a To header.
>
> It will NOT work by itself with mailing lists, which put their own 
> address into the To header. For that, you need to make your mail 
> server add an "X-Original-To" header with the original envelope 
> recipient address that was eventually dropped into the postmaster box. 
> for example, all the mail in my MailMate List mailbox has this:
>
>   X-Original-To: mmlist-20120120 at billmail.scconsult.com
>
> And MailMate automatically used that address when I started this 
> reply.
>

Very good. I'll take the suggestion and put a little more effort into 
setup on the server side.

thanks,

Malcolm
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