Mailing a pen in a tracked 'letter'?
Hello,
I'm looking to mail a pen (that's under 20mm thick and weighs under 500g) in a tracked letter to save on postage. The 'Medium C5 envelope Up to 500g' letter for $8.10 seems to fit the bill but I'd prefer to send it in a small bubble mailer.
Can I pay the $8.10 rate but send it in a bubble mailer instead? Would the bubble mailer itself be an added cost?