app/views/petition_mailer/status_change_mail.text.erb
<%= t("mail.dear") %> <%= @petition.petitioner_name %>,
<%= t("mail.status.changed", petition: @petition.name) %>
<%= t("show.overview.status.#{@petition.state_summary}") %>
<%= t("mail.status.changed_instructions_petitioner", {
email: @petition.petitioner_email
}) %>
<%= t("mail.signoff", petitioner_email: @petition.petitioner_email) %>