Wall-mounted letterbox - any thoughts?

[WoolyMammoth55]

Hi all,

Sorry so dull but we'd be grateful for any thoughts :) We've got a lovely vintage front door and just noticed (observant much?) that there's no cut out for letterbox.

I'm remembering my draughty childhood letterbox and feeling reluctant to cut one in to the beautiful solid door.

So considering leaving it and getting a wall-mounted one like this:
cdn.notonthehighstreet.com/fs/76/55/a7b9-9d2c-4802-8355-050876996449/original_lulworth-blue-post-box-with-lock.jpg

Anyone got any experience of these? Do posties complain? Does the rain get in and drench your mail?

Be grateful for any thoughts, thanks!

@PigletJohn - One of the houses I grew up in had an in-wall parcel dropbox basically, it reminded me of the ones libraries sometimes have.

It was lovely and I've been plotting how to put in similar in my enclosed porch which seems to have about a 50/50 shot of delivery people popping them into anyway.

House I moved to had one. I hated it.
There's no draughts through a good well fitted letterplate.