If you're using appointment confirmation emails, you can specify which appointment types should actually send those out! 

For example, if you only want your "Initial Consult" appointment to send a confirmation email, you can set things up so that  no other appointment types will

Head to Settings, and then Appointment types:

Select the appointment type you want to work with, and from this page, you can select whether or not it should send confirmation emails:

Select the relevant appointment type from your list:

Below the "colour picker" on the appointment type page, you'll see the option to select a template for reminders or confirmations. Select Booking confirmation email:
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The options that show up will be based on the confirmation email templates that you've set up. If you don't see what you're after, we recommend double-checking that the template has indeed been set up as a confirmation template, and not a reminder template.

Be sure to save your settings!

You can also specify which appointments should send reminders—check it out over here!