app/views/signature_mailer/share_mail.text.erb
<%= t('mail.mailafriend.mail',
name: @signature.person_name,
sig_email: @signature.person_email,
petition_name: @petition.name,
sig_function: @person_function,
subdomain: @petition.subdomain,
intro: @petition.description,
petition_email: @petition.petitioner_email) %>
<%= t("mail.confirm.signoff") %>