accounts_accept_terms: Check if imported user wants marketing emails.

templates/zerver/accounts_accept_terms.html

@@ -59,6 +59,16 @@ the registration flow has its own (nearly identical) copy of the fields below in
                         {% endfor %}
                     {% endif %}
                 </div>
+                {% if first_time_terms_of_service_message_template %}
+                <div class="input-group">
+                    <label for="id_enable_marketing_emails_first_login" class="inline-block checkbox marketing_emails_checkbox">
+                        <input id="id_enable_marketing_emails_first_login" type="checkbox" name="enable_marketing_emails"
+                          checked="checked" />
+                        <span class="rendered-checkbox"></span>
+                        {% trans %}Subscribe me to Zulip's low-traffic newsletter (a few emails a year).{% endtrans %}
+                    </label>
+                </div>
+                {% endif %}
                 {% endif %}
                 <div class="controls">
                     <button id="accept_tos_button" type="submit">{{ _('Continue') }}</button>

zerver/forms.py

@@ -234,6 +234,7 @@ class RegistrationForm(RealmDetailsForm):
 
 class ToSForm(forms.Form):
     terms = forms.BooleanField(required=False)
+    enable_marketing_emails = forms.BooleanField(required=False)
     email_address_visibility = forms.TypedChoiceField(
         required=False,
         coerce=int,

zerver/views/home.py

@@ -57,6 +57,18 @@ def accounts_accept_terms(request: HttpRequest) -> HttpResponse:
                     email_address_visibility,
                     acting_user=request.user,
                 )
+
+            enable_marketing_emails = form.cleaned_data["enable_marketing_emails"]
+            if (
+                enable_marketing_emails is not None
+                and enable_marketing_emails != request.user.enable_marketing_emails
+            ):
+                do_change_user_setting(
+                    request.user,
+                    "enable_marketing_emails",
+                    enable_marketing_emails,
+                    acting_user=request.user,
+                )
             return redirect(home)
     else:
         form = ToSForm()