Snail Mail Eaten By....snails....!

[ToraToraTora]

https://www.bbc.co.uk/news/articles/cm2nlym5y2jo

Your puns please!

[Canary42]

A copper band round the post should do the trick.

https://www.greengardener.co.uk/shop/pest-control-outdoors/slug-control/copper-slug-and-snail-tapes/#:~:text=Slugs%20and%20snails%20hate%20copper,containers%20from%20slugs%20and%20snails.       

[youngmafbog]

Get Pat to put some blue slug pellets in there.  Soon be gone.

[douglas9401]

Adderstone postal services remain sluggish.

[Togo]

It just needs a stamp on it🐌.

[netherfield]

You've been slimed, who gonna call

Postbusters.

[Patsy33]

This problem certainly needs to be addressed..

[elliemay1]

Postman Pat will be happy, he'll have l'escargot to deliver now!

[Old_Geezer]

Why don't they just scatter slug/snail poison nearby. It works quite well.

[Old_Geezer]

I now see it has been suggested.

 

Copper doesn't work that well. They may not like it but the incentive of a delicious envelope and stamp is sufficient to incentivise them.

[andres]

The food in here used to be first class but now it's second rate.