When page.email has multiple addreses like email: ["user1@institution.edu", "user2@institution.edu"] the following generates an invalid email address.
{% if site.pilot %}
The lesson taught in this workshop is being piloted and a precise schedule is yet to be established. The workshop will include regular breaks. Please contact the workshop organisers if you would like more information about the planned schedule.
{% endif %}
<a href="mailto:user1@institution.educuser2@institution.edu">contact the workshop organisers</a>