-P.S. You can always fine-tune which notifications you receive here:
-{{ settings.APP_URL }}{% url user_subscriptions id=recipient.id %}
+{% if not exclude_finetune %}
+{% trans "P.S. You can always fine-tune which notifications you receive here:" %}
+{{ settings.APP_URL }}{% url user_subscriptions id=recipient.id,slug=recipient.username|slugify %}
+{% endif %}