Outgoing Mail Box for Brick Mailboxes – Outgoing Mail Bin & Incoming Mail Tray

No flag on your mailbox? Your carrier can't tell you have mail going out.

If you have a brick, stone, or column-style mailbox, you probably lost the flag when the mailbox was built in — and that means outgoing mail sits there until you remember to flag down the carrier or drive to a drop box. This organizer fixes that. Drop your outgoing mail in the bright red bin, and the moment your carrier opens the door, it's obvious something needs to go out.

It does double duty, too. The white tray beside the bin gives your incoming mail a flat place to land instead of scattering across the bottom of the mailbox, so picking up the mail is one clean grab.

What You Get

• One outgoing mail bin with OUTGOING MAIL lettering molded into the front panel — not a sticker, not a label, so it will never peel, fade, or wash off
• An attached flat sorting tray for incoming mail, printed in white for contrast
• A drop-in design with no adhesive, no screws, and no modification to your mailbox

Why It Works

Open-slot design — Vertical slots down both long sides and across the front let you see how much mail is inside at a glance, without lifting anything out or peering over the top. The slots also keep the box light and let air move through so nothing sits in a damp, closed bin.

High-visibility color — The bin is printed in red so it reads instantly against the dark interior of a mailbox. The tray is printed in white so incoming mail is easy to spot against it.

Built to last outside — Printed in PETG, not PLA. PETG handles summer heat inside a closed metal or masonry mailbox without softening or warping, and it stays tough in the cold instead of turning brittle. It also has some flex to it, so it takes a knock without cracking.

Dimensions

• Overall footprint: 6" wide x 9.75" long x 3.6" tall
• Outgoing bin: 3" wide x 9.75" long x 3.6" tall (holds standard letters and #10 envelopes upright)
• Sorting tray: 3" wide x 9.75" long, lies flat
• Weight: about 7.3 oz

Please measure the inside of your mailbox before ordering. This is sized for a standard large residential mailbox interior. If your opening is smaller or an unusual shape, message me before you buy — I size these to fit and I'm happy to check.

Made to Order

Each one is printed to order in my shop.

Because these are 3D printed, you may see faint layer lines on close inspection. That's normal for this process and part of how the piece is made — it doesn't affect strength or function.

Also in My Shop: Replacement Mailbox Doors

Broken or missing mailbox door? That's my specialty. I've modeled replacement doors for dozens of mailbox styles, and I make custom ones from your measurements and photos when an off-the-shelf door doesn't exist for your box. If your mailbox door has snapped off at the hinge, message me with a few photos and measurements and I'll tell you if I already have your style or can build it.

Questions about fit? Message me. I'd rather help you get the right size than have you guess.