Here's a mistake in an email template.

New Email Tickets not Permitted

The email you recently sent with the subject "[%SUBJECT%]" could not be processed.

It's missing the word "be." This is on two different templates.

You also use different styling on the template titles, but I'm not sure why. For instance, the line-height on Ticket Closed is 18px, while it's 24px on other template titles, like Survey and Ticket List. Some also have a bottom margin, while others don't. This affects the gap between the title and the text of the body of the template.

On the email verification template: To verify the email address associated to this account, please click the link below. I think "to" should be "with." 

On the password reset template: You are receiving this email because you reported trouble logging in to your [%COMPANY%] account.  Our records indicate your user name is: I think the spaces between "in to" and "user name" should be removed, although maybe you can debate the space in "in to."

There are also a number of grammatical mistakes in your documentation. Double words like "the the" or typos. You could probably find a number of them just by running it through a spellchecker.