Besides setting the "HTTPS" environment variable and SECURE_PROXY_SSL_HEADER
SECURE_SSL_REDIRECT, also seems that can be problem when rendering template and sending mail with EmailMultiAlternatives() when .txt body is used as is in adapter.py render_mail()
[1]: https://github.com/pennersr/django-allauth/blob/master/allauth/account/adapter.py
for ext in ["html", "txt"]:
try:
template_name = "{0}_message.{1}".format(template_prefix, ext)
bodies[ext] = render_to_string(
template_name,
context,
self.request,
).strip()
except TemplateDoesNotExist:
if ext == "txt" and not bodies:
# We need at least one body
raise
if "txt" in bodies:
msg = EmailMultiAlternatives(subject, bodies["txt"], from_email, to)
if "html" in bodies:
msg.attach_alternative(bodies["html"], "text/html")
else:
msg = EmailMessage(subject, bodies["html"], from_email, to)
msg.content_subtype = "html" # Main content is now text/html
return msg
For example print(bodies[ext]) gave:
"To confirm this is correct, go to " https://127.0.0.1:8000/accounts/confirm-email/MjI:1kS0Mj:M5YfUf9-1Vg_TlgjVrK6vAtaLDE/ "
but on email is still http://
http://url7514.sitename/ls/click?upn=HJL2SSWV...
With most devices also this worked since should be redirected still to https://, but on some didn't, so had to change in default templates/account/email/email_confirmation_message.txt to html extension,
after result :
To confirm this is correct, go to https://sitename/accounts/confirm-email/M...