I need some advice on my wooden mailbox post

Good Morning Stephanie, Isn't there some way to relocate your mailbox or just that portion of the sprinkler? Either way it would mean digging into a portion of your yard but aesthetically it WILL recover; your mailbox, left in it's present situation, will not. Are you REALLY willing and ready to slip a plastic covering on AND off your mailbox each time the sprinkler system kicks on and off? Would you always be available to do so? Probably not. Would the sprinkler system be going when the mail carrier comes along? That would be a problem, too, if there is mail to be delivered to your home and the box is covered by plastic :( The covering might work temporarily, but not long term. I know this is not what you want to hear but it's the only thought I have on the matter. Good Luck, and thanks for asking HOmetalk for advice :)

Purchase a composite sleeve (i.e. Trex type product)...probably run $20-45 depending on generic brand and color).

Let me add an idea. Have you tried marine grade urethane on the post? It protects things that are in water all the time. Home Depot would have someone to ask. Good luck!

I agree with Bj Blyth. Keep your post dry to let the wood dry well. Put a few coats of marine polyurethane on it, it should last you a long time. We put two coats on our back steps when we replaced them and it has been three years now and it still looks like it was just done. we have four dogs that are constantly in and out the doggy door onto those steps.