Thank you for reaching out to us through the Community. I can definitely understand why you would want to customize the Thank You page of the sign-up forms as you could include among other things, a more personal message to the newly signed-up recipients. At this time, we still do not have the ability to customize this page, but I have tracked the request to notify our developers about the possibility of this feature. I do apologize for any inconvenience this may cause. I also want to mention that we have our Welcome Email campaigns that can be sent out to newly added recipients automatically upon singing up for your lists. Although this won't replace the Thank You page, you are able to create and customize a more personal email that will send out to your new contacts. For more information on this, please click here. Please, let us know if you need assistance with anything else.
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