Dear <%= @receiver.informal_name %>
Applicaton <%= @cinstance.name %> has changed to plan <%= @new_plan.name %>.

Details:
Application: <%= @cinstance.name %>
Developer: <%= @account.name %>
Service: <%= @service.name %>
Previous plan: <%= @old_plan.name %>
Current plan: <%= @new_plan.name %>
To view application, follow this link: <%= admin_buyers_account_application_url(@account, @cinstance) %>

