email not forwarding

email not forwarding

Hi,
I've tried to set up my Zoho email account so that it forwards all incoming emails to a gmail account I use [settings, email forwarding and pop IMAP, email forwarding, Forward a copy of incoming message to:] . I got the confirmation email and it said it was set u, but my zoho emails aren't being forwarded. 
Cany you help with this, please?
Thanks,
David