Can I use the equality ("==") operator in an email template?

Ok, I know that way. But can I make?

{{if street1=="something"}}

...

?

No, the email templates does not support the equality (==) operator.
You should place such a comparison to a PHP method, and call the PHP method from an email template.

A post was split to a new topic: How to check an order status in an email template?