<% if message.content_attributes.dig(:email, :from).present? %>
From: <%= message.content_attributes.dig(:email, :from).join(", ") %>
<% else %>
From: <%= message.sender&.try(:email) %>
<% end %>
<% if message.content_attributes.dig(:email, :subject).present? %>
Subject: <%= message.content_attributes.dig(:email, :subject) %>
<% end %>
<% if message.content_attributes[:to_emails].present? %>
To: <%= message.content_attributes[:to_emails].join(", ") %>
<% end %>
<% if message.content_attributes[:cc_emails].present? %>
CC: <%= message.content_attributes[:cc_emails].join(", ") %>
<% end %>
<% if message.content_attributes[:bcc_emails].present? %>
BCC: <%= message.content_attributes[:bcc_emails].join(", ") %>
<% end %>
<% end %>