Hi @Yoram and welcome to the forum!
What email system and what operating system do you use? Depending on those criteria, here are some options:
If you’re on Gmail, see the Asana Gmail plug-in.
If you’re using Outlook for your email and you’re on Windows, and it’s part of an Office 365 subscription, then you can consider using the Asana Outlook plug-in.
If you use Outlook on Windows and it’s not Office 365, or you want additional features beyond the Asana plug-in, then check out the great third-party Sendana integration.
If you want the ability to set a due date from an email in any environment including mobile, and you also want to be able to set the assignee, set tags, and/or add the task to additional projects, then see the Hashtag Automation feature of my third-party integration Flowsana (more about that capability in this post).