E-mail campaign

Hi,
I'm a new Zoho user and I have a question about E-mail campaign.
I tried to create an e-mail campaign with the "campaign" module but it doesn't permit to link specific leads, mail template, and so on; otherwis, If I use the "mass-mail" function thee isn't a way to link it to a specific campaign.
In which way can I link a specific mal campaing to a specific mass mail?

Thank you,

Regards

Silvia