diff --git a/finance/views.py b/finance/views.py
index 34283de..6aaac01 100644
--- a/finance/views.py
+++ b/finance/views.py
@@ -14,7 +14,8 @@ from rest_framework.views import APIView
 from yandex_money.models import Payment
 from django.conf import settings
 from django.core.mail import EmailMultiAlternatives
-from django.template.loader import get_template
+from django.template.loader import render_to_string
+from django.utils.html import strip_tags
 
 from courses.models import Course
 from courses.api import CourseParamsApi
@@ -159,8 +160,8 @@ class InvoiceDetailView(APIView):
                 )
                 invoice.yandex_pay = yandex_pay
 
-                plaintext = get_template('mail/sales/back_set_bill.txt')
-                html = get_template('mail/sales/back_set_bill.txt')
+                html = render_to_string('mail/sales/back_set_bill.html', {'varname': 'value'})  # render with dynamic value
+                plaintext = strip_tags(html)
 
                 context = {
                     'user_email': invoice.bill.user.email,
diff --git a/templates/mail/sales/back_set_bill.txt b/templates/mail/sales/back_set_bill.txt
deleted file mode 100644
index 03be285..0000000
--- a/templates/mail/sales/back_set_bill.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-Выставлен новый счет \n
-Пользователь: {{ user_email }} \n
-Продавец: {{ opener_full_name }} \n
-Курс: {{ course_title }} \n
-Дата продажи: {{ date }} \n
-Сумма: {{ price }} руб.
\ No newline at end of file