Each template has 3 override slots in GHL → Settings → Custom Values:
tos_template_<templateId>_subject — overrides the email subjecttos_template_<templateId>_body — overrides the email body (use \n for line breaks)tos_template_<templateId>_sms — overrides the SMS body (optional)Example: to override the buyer welcome email subject, create custom value tos_template_buyer_welcome_subject with your text. Merge tokens like {{client_first}}, {{property}}, {{closing_date}} still work.
Available merge tokens: {{client_name}} · {{client_first}} · {{transaction_name}} · {{property}} · {{stage}} · {{closing_date}} · {{days_until_close}} · {{coordinator_name}} · {{coordinator_email}} · {{tc_phone}} · {{listing_team}}