My mass email uses an @zoho.crm account rather than the email account I have specified

My mass email uses an @zoho.crm account rather than the email account I have specified

Hi,

This is a 1 user system.  The user has an email address associated to the account.  @myaccount,com

I create a template and in the From field I select the @myaccount address although I have no idea where this comes from.

When I send the emails they are received from @zoho.com

I see that the emails are being sent through zoho mail.  I have set up an account for @myaccount and made it the default account for the @zoho,com account.

But still all the mass emails are received from @zoho.com.

What is the problem ?

Thanks