Mailgun will store the email body for 3-7 days (depending on plan/settings). I'm definitely not an advocate of mailgun as a whole, but their logs are really good in my opinion.
Are you stating you want the email body indefinitely though? Does Mandrill store this? I'm yet to fully check them out.
Are you stating you want the email body indefinitely though? Does Mandrill store this? I'm yet to fully check them out.