Missing pluralization
{% with extra_recipients=recipients|slice:"20:" %}
{% if extra_recipients|length > 0 %}
<li>
- {% blocktrans with count=extra_recipients|length %}
- And {{ count }} other recipients...
+ {% blocktrans count counter=extra_recipients|length %}
+ And 1 other recipient.
+ {% plural %}
+ And {{ counter }} other recipients...
{% endblocktrans %}
</li>
{% endif %}
