Pretty sure iOS Mail supports this
PS. You might want to check that feature out that I explicitly named on Thunderbird desktop.
PPS. General observation: any software (or service) by Apple isn't even close to, and by that I mean within thousands of miles of, competent third party alternatives (FOSS or otherwise) :P
Also, while open source alternatives are generally more flexible than what Apple offers, sometimes this is not the case. Believe me, I use both based on whichever one meets my needs :)
> also does this
Nope!
> Believe me
No, but I won't - especially considering how you are pretty much stuck on "yes, Apple mail does it too.. well.. yeah.. in way… yes it does."