app/mailers/group_update_mailer.rb
class GroupUpdateMailer < ApplicationMailer
def inform_subscriber(recipient, group, instigator)
set_template("fabc29b0-084d-481c-95eb-09eebe4fcd29")
set_personalisation(
name: recipient.given_name,
group: group.to_s,
instigator_email: instigator.email,
group_url: group_url(group),
)
mail(to: recipient.email)
end
end