I have always struggled to properly export email from Airmail to DevonThink for archival purposes because it usually exports as plaintext with the default settings, which frankly is not very useful in a world where every email has complex HTML in it these days.
Airmail recently added Custom Actions and by chance, I found out that if you use the following settings you can export to your DevonThink inbox folder as a perfectly formatted EML file.
Hope this helps someone 
It does, this is GREAT! Thanks for that find!
It seems to me theyāre relying more on the OSā fundamental features. Of which stock apps are a part.
Iām not sure which side is responsible to be honest but both sides should be aware that a lot of people use this integration and it just doesnāt work 
What does NIMBY mean?
Iāve actually fixed problems like this by emailing both developers at the same time and letting the conversation between them ensue. 
Sadly, itās not viable with forums and email addresses that are fronts for support software.
Shame 
although DTās email is public and I doubt Airmailās is that hard to find ahaha
Not In My Back Yard meaning āYes, do it, but not near meā
Originiated in the 1980s (I think). The canonical example is āYes we need more affordable housing - just now near where I liveā.
I think a better idiom for this situation is Not Invented Here -
Hahah as in, yes, but the other platform can figure it out XD
I thought that, too: NIH seemed more appropriate.
Iām wondering, though, whether the solution is available also on iOS and whether it is applicable to more targets than DevonThink.
I donāt think it works on iOS because there is no easy way to save to a specific āFiles appā directory within Airmail.
That being said, let me know if you find any cool integrations with other apps
