Trying to synch my Zoho email with Zoho CRM

Trying to synch my Zoho email with Zoho CRM

Hi,

We're using your free version currently. Trying to synch our Zoho email accounts with the Zoho CRM. Can't seem to make it work. I went into Setup>Email in the CRM and added my email address. But when I test it by sending emails to and from a test lead, no emails appear in the lead record.

Can you help?