I created a free ZOHO account to start my small business. I created 4 email adresses, but I am only able to send email to my coworkers : I cannot send emails from ZOHO to Gmail or other mail services. I also cannot receive email from OTHER MAIL SERVICES except from my ZOHO coworkers.

HOWEVER I have already set up all the steps to make my company emails working and I also did created the SPF, and created a subdomain in Hostgator in order to set up the DKIM and I still can't receive email from my Zoho Mail on Gmail or other mail boxes.

Could you please, help me, thanks.