Yes, you can connect to your Email account using a CNAME. To do this, please use the CNAME webhost.dynadot.com

For your email to work, please include the MX record webhost.dynadot.com

To prevent spoofing, you may also include a TXT record "v=spf1 mx include:webhost-mail-out.dynadot.com include:spf.webhost.dynadot.com ~all"

Please be aware it may take anywhere from 20 minutes to 24 hours for your DNS changes to propagate.

The benefit to using a CNAME vs. an A Record is that if the Email IP address is ever changed, you won't need to adjust your settings. You can also choose to simply use the "Dynadot Email Hosting" settings.