@chameleon54 wrote:
If you havnt got one already, ask your post office for one of their gauges, so you can check that your envelopes fit through the slot easily. This will simply resolve the problem of thickness. If it doesnt go through the slot easily, its a parcel and should be charged at parcel rate. I have one and find it very useful as I can sometimes use a thinner mailer or adjust contents so it fits. If you are a regular spending 25K per year on postage, they should give you one.
This wont help with the confusion about wether the contents have to be written material or not though.
They give them to anyone no need to spend 25k a year, thankfully, because I keep breaking mine (do not mix well with water) and I have had a few 🙂
