[MlMt] smart mailbox recipient filters are case sensitive: should they be?

Eric Sharakan esharakan at gmail.com
Fri Jun 5 15:36:11 EDT 2020

On 5 Jun 2020, at 15:02, Pete Resnick wrote:

> On 5 Jun 2020, at 12:50, Fabian Blechschmidt wrote:
>> On 5 Jun 2020, at 19:45, Eric Sharakan wrote:
>>> Hi, I have several smart mailboxes with a condition of "To Contains 
>>> sharakan".  Someone just sent me an email with my last name 
>>> capitalized, and the condition wasn't satisfied.
>>> Since email addresses are case-insensitive, shouldn't the filters 
>>> also be?
> Perhaps it's because I'm using a more recent version (1.13.1), but at 
> the bottom of the "contains" drop down, you will see "Options", one of 
> which is "Case Sensitive". Is it checked or unchecked?

Wow, I had not noticed that before!  And I certainly don't remember 
setting the case sensitive flag on any of my conditions, but one was in 
fact set.  Once I cleared it, thing are working as expected.

Thanks for the tip!


>> unfortunately is the local-part (before the @) technically case 
>> sensitive.
>> https://stackoverflow.com/a/9808332/1480397
> Not only is the local-part case insensitive, you would not believe the 
> awful things you can put in there (all sorts of symbols, and spaces, 
> and other obnoxiousness, if you enclose it in double-quotes). A lot of 
> that was to allow for routing through weird legacy systems. But that's 
> why it's set up that way.
>> The sentence I like the best is:
>>> In short, you are safe to treat email addresses as case-insensitive.
> Mostly, but no guarantees.
>> It is up to Benny, but at least I agree and think this is a bug which 
>> should be fixed 😅
> If you don't have "Case sensitive" turned on and it's not matching, 
> then yes, probably a bug.
> pr
> -- 
> Pete Resnick https://www.episteme.net/
> All connections to the world are tenuous at best
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