I hate cluttering up another’s thread but here’s some useful info regarding shipping with coil-flips and non machinable letters…since it’s been discussed here.(I’ll start a specific thread for this as well)
Postage is currently changing and I’ve had a few returns that could not be delivered do too lack of postage!(Non-machiheable letters cost more postage)
You will be required to use these stamps specifically for non-machineable letters
Here they are
Alaskagrown