{% extends "customer/emails/base.html" %}
{% load i18n %}

{% block body %}{% autoescape off %}{% blocktrans with name=site.name %}
You're receiving this email because your password has been changed at {{ name }}.
{% endblocktrans %}

{% trans "If it wasn't you who changed it, please reset your password immediately:" %}
http://{{ site.domain }}{{ reset_url }}

{% trans "Otherwise, you can ignore this email." %}

{% endautoescape %}{% endblock %}

{% extends "customer/emails/base.txt" %}
{% load i18n %}

{% block body %}{% autoescape off %}{% blocktrans with name=site.name %}
You're receiving this email because your password has been changed at {{ name }}.
{% endblocktrans %}

{% trans "If it wasn't you who changed it, please reset your password immediately:" %}
http://{{ site.domain }}{{ reset_url }}

{% trans "Otherwise, you can ignore this email." %}

{% endautoescape %}{% endblock %}

Fix email template extending the wrong base template
Fix email template extending the wrong base template

The plain text template was extending the HTML base instead of the text one.