use a single template for all mails.

evapp/settings.py

@@ -1,7 +1,10 @@
+# sender mail adress
 EVA_MAIL = 'benni.baermann@wikimedia.de'
 
+# these Fields should be included in every mail
 BASIC_DATA = ['firstname', 'lastname']
 
+# for every department: 'MAIL' => mail adress, 'DATA': additional fields to include
 MAILS = {'IT': {
                 'MAIL': 'it@wikimedia.de',
                 'DATA': ['laptop', 'os',],

evapp/templates/evapp/IT_mail.txt

@@ -1 +0,0 @@
-{% include 'evapp/dataloop.txt' %}

evapp/templates/evapp/OFFICE_mail.txt

@@ -1 +0,0 @@
-{% include 'evapp/dataloop.txt' %}

evapp/templates/evapp/department_mail.txt

@@ -0,0 +1,9 @@
+Hallo!
+
+Es gibt einen Neuzugang bei Wikimedia! Hier (<insertlink>) kannst Du nachsehen,
+welche Schritte jetzt für Deine Abteilung nötig werden. Im Folgenden alle Daten,
+die Du dafür brauchst:
+
+{% include 'evapp/dataloop.txt' %}
+
+Grüße, Deine E.V.A.

evapp/views.py

@@ -63,7 +63,7 @@ class EvaFormView(CookieWizardView):
         context = {'data': self.beautify_data(newdata)}
 
         try:
-             mail_template = get_template(f'evapp/{department}_mail.txt')
+             mail_template = get_template(f'evapp/department_mail.txt')
              send_mail(
                  'EVA: Neuzugang',
                  mail_template.render(context),