Title kinda says it all; iOS11 now allows direct support of this into Omnifocus for example. Sure would be nice if Dynalist supported this!
This would be amazing. Is it possible now that Dynalist has an API?
Add an IFTTT contact in your iOS with the email address email@example.com. Tell Siri to send an email to IFTTT. Make a new IFTTT applet with IF: email THEN: webhooks. Fill out the webhooks form to send the email body or subject or whatever to dynalist according to the API. Sorry I can’t give deeper details I don’t use Siri, just wanted to pipe in to say its very probably possible.