question
using pfsense router firewall
my isp blocks ports
i have domain name through dynu
if i use email store forward will i be able to use home email server
do i have to port forward or use tunnel to use this to get email from and to server ?

That is how I use the store forward service, my ISP blocks e-mail ports, TCP 25, for example, used for inter e-mail servers communication, so my e-mail server communicates with Dynu's store forward service using and alternate port (TCP 2525) to receive e-mails.

So, the answer is yes.