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If you’re upgrading your front door, the humble mail slot can make a bigger difference than you think. It’s a small detail that punches above its weight in style, security, and comfort. The right letter plate keeps drafts at bay, stops rain sneaking in, helps deter thieves, and adds curb appeal in one neat move. Looking for popular offers and a clear price list to guide your purchase? You’re in the right place. Let’s walk through what to buy, why it matters, and how to score the best deal in the UK.
Through-door mail slots, often called letter plates, are the most common choice for front doors. They include an exterior flap to shield the opening and an optional interior flap to keep the breeze out. You’ll find them in classic polished brass, sleek stainless steel, and contemporary powder-coated finishes. If your door already has a cutout, replacing like-for-like is straightforward. Starting from scratch? The key is choosing a size that suits your door and the mail you expect to receive.
If you want to keep insulation high and drafts low, a telescopic mail slot with an integrated sleeve is a smart pick. Picture a tunnel that runs through the door’s core. It guides letters cleanly inside and seals around the edges to reduce air leaks. Some models include brush liners and spring-loaded flaps on both sides for extra protection. Need a quiet hallway? These sleeved designs help soften the thump of the post hitting the floor.
Exterior-only plates offer basic protection and a clean look outside. Back-to-back plates include both exterior and interior flaps, sometimes with a tidy frame on the inside to hide the cutout. If you live in a breezy spot or want a more polished interior finish, back-to-back is worth the small extra cost. They’re also better at noise reduction and can pair nicely with a mail catcher or cage.
Solid brass letter plates are timeless. They bring warmth and character, especially in period homes. You’ll see polished, unlacquered brass that ages into a rich patina, as well as lacquered versions that hold their shine longer. Love the classic look? Brass complements traditional knockers, door numbers, and rim locks beautifully. Keep a soft cloth handy—an occasional buff keeps brass glowing without much fuss.
Stainless steel is the go-to for minimalists and coastal or exposed locations. It’s tough, corrosion-resistant, and modern. Brushed finishes hide fingerprints and light scuffs, while polished stainless mimics chrome for a crisp, high-shine look. If you want low maintenance with high durability, stainless steel is hard to beat. It pairs well with contemporary hardware and clean-lined doors.
Aluminum letter plates offer a great value-to-weight ratio. They’re often finished with a powder coat in black, white, anthracite, or custom colors for a bold, uniform look. Powder-coating resists chipping and fading, so it stays looking sharp. If you’re matching a dark door or going for modern industrial vibes, a powder-coated aluminum slot delivers style without stretching your budget.
For heritage homes and rustic exteriors, bronze and black iron finishes add depth and authenticity. Aged bronze looks rich and lived-in, while black iron or matte black adds drama to paneled doors. These finishes complement Victorian, Edwardian, and farmhouse styles, especially when coordinated with matching hinges, knobs, and knockers. They’re not just pretty—they’re sturdy and weather-friendly too.
Mail slots come in several common sizes, and getting it right saves you from tricky carpentry. A popular exterior plate width is around 10 inches, with an opening roughly 8 to 9 inches wide and about 2 to 2.5 inches high. For larger envelopes, consider an opening near 10 inches by 2.5 inches. Before you buy, check the aperture—the actual hole size—rather than only the overall faceplate. A snug fit looks better and seals better.
Measure your door’s thickness so the slot and any sleeve fit properly. Many telescopic sleeves adjust to standard residential door thicknesses around 1.75 inches to 2 inches. If you’ve got a thick timber door or added insulation, double-check the product’s max thickness. Also consider interior clearance: if a radiator, console table, or shoe rack sits behind the door, choose a slot that directs mail down neatly or add a cage to keep things tidy.
Drafts sneaking through your mail slot? Brush-lined interiors and double-flap setups are your best friends. Brushes reduce airflow and catch light debris. A tight exterior flap with a decent return lip keeps rain out when the wind picks up. If your hallway feels chilly in winter, upgrading to a brush-sealed, insulated slot can feel like putting a snug jumper on your door—cozy, quiet, and efficient.
Tired of the clatter when the post lands? Look for cushioned or spring-dampened flaps. These mechanisms slow the flap on closing, trimming noise and protecting the finish over time. Some designs include rubber bumpers or soft-close features to keep things peaceful, especially helpful if you’re working from home or have little ones napping nearby.
“Fishing” is when someone tries to pull items through your slot using a tool. To fight back, pick a slot with anti-fishing geometry, narrow internal lips, or an internal shutter. A spring-loaded interior door or lockable shutter adds another barrier, making it far harder to reach keys or turn the inside handle. It’s a simple add-on that punches well above its weight in deterrence.
A mail cage or catcher bag mounts inside the door to gather letters. Lockable versions prevent prying hands from reaching inside, while fabric or soft-sided models muffle noise and keep pets from chewing the post. If you’re security-conscious, pairing an anti-fishing plate with a lockable cage is a smart, affordable combo. Add a separate viewer or door chain for a layered defense that still looks tidy.
Got a modern door with sharp lines? A slim, rectangular stainless or matte black plate ties the look together, like a sleek belt on a tailored suit. Clean edges, recessed mounts, and flush screws create a seamless vibe. Match the finish with your handle set and numerals for a designer-level feel without an eye-watering price tag.
Period doors sing with classic letter plates. Think polished brass with raised lettering, ornate edges, and robust flaps that feel solid in the hand. Pair with an urn knocker, aged bronze numerals, and a traditional rim lock for the full heritage chorus. You’ll keep the soul of your home intact while gaining modern weatherproofing and security.
Most DIYers can handle a mail slot install with a pencil, a tape measure, a level, a drill with wood bits, a jigsaw, sandpaper, and a screwdriver. Keep a narrow 1 inch chisel handy for tidying corners, plus exterior-grade sealant for the final weatherproofing pass. Safety glasses and a steady hand go a long way here.
First, mark the centerline on your door at a comfortable height, often around mid-chest for easy posting. Trace the manufacturer’s template, drilling pilot holes at the corners before cutting the opening with a jigsaw. Dry-fit the sleeve or plate, sand any tight spots, then seal the cut edges to protect the door. Install the exterior plate, add the interior flap or cage, and finish with a bead of sealant behind the faceplate to block wind-driven rain. Tighten screws evenly so the flaps swing freely without rubbing.
If your door is composite, steel-faced, or has internal wiring for a smart lock or doorbell, consider a professional installer. A pro will ensure clean cuts, solid sealing, and correct hardware choice for your specific door construction. It’s a small investment that safeguards your door’s warranty and your peace of mind.
Hunting for popular offers? Basic exterior-only plates in aluminum or simple stainless often start in the low double digits. Expect a clean look and decent weather resistance. You’ll usually get a single flap and straightforward mounting. For rentals or quick refreshes, budget picks make sense, especially when paired with a simple interior brush frame to boost insulation without spending big.
The best value for most homes sits mid-range. Here, you’ll find solid brass, better stainless, and powder-coated options with brush seals, double flaps, and sturdier springs. Telescopic sleeves and anti-fishing designs appear more often too. If you want a balance of style, durability, and insulation, this tier is the reliable sweet spot for long-term use.
Premium plates justify their price with heavy-gauge metals, flawless finishing, and advanced security touches. You’ll see precision-cast brass, marine-grade stainless, discreet fixings, and silky-smooth, quiet-close flaps. If you’re upgrading a statement door or restoring a period property, these are the heirloom-quality finishing touches that make the entrance feel complete.
A mail cage keeps letters off the floor and away from pets, while a tidy bag softens the drop and hides clutter. Some bags are insulated to reduce drafts, and lockable cages add a layer of security. Choose dimensions that match your slot opening and the space behind your door. It’s a tiny addition that keeps hallways clean and safe.
Match your letter plate with a knocker, handle, and numerals in the same finish for a cohesive look. It’s like coordinating shoes and a belt—subtle, but it ties the outfit together. Black on a deep blue door is dramatic, while polished brass on a rich green or classic black door oozes tradition. Don’t forget a viewer for safety and an exterior escutcheon if your lock needs one.
Even the best mail slot won’t fix a leaky door on its own. Add perimeter seals and a snug threshold to complete the weatherproofing picture. You’ll feel the difference the next windy day, and your heating bill might quietly thank you too. Think of it as sealing the envelope around your home.
When you compare offers, look at materials, flap mechanism, included brush seals, and any security features. A slightly higher price for a solid brass or marine-grade stainless model can pay off in longer life and better weather resistance. Use a trusted comparison site such as ZoneOffer to scan multiple retailers quickly, then zero in on specs and warranties rather than just the headline price.
Don’t just skim the stars—read comments about noise, draft control, and how the finish holds up over time. Watch for mentions of smooth spring action and flap alignment; sticking flaps are a red flag. Also consider installation feedback. If many buyers say the template was accurate and fittings were solid, you’re probably looking at a well-engineered product.
Timber doors love brass and bronze. Choose a 10 inch plate with an 8.5 inch by 2.5 inch opening for easy letter delivery. Pair it with an interior brush frame to cut drafts without spoiling the period aesthetic. If you regularly receive thick mailers, step up to a wider aperture to prevent bending or jams.
Composite and uPVC doors benefit from telescopic letterboxes designed specifically for their construction. Look for insulated sleeves, weather hoods, and anti-fishing flaps. Ensure the screws and fixings are compatible with your door’s skin and core. A well-chosen composite-safe slot will preserve the door’s integrity while keeping your hallway warmer.
Stainless steel needs little more than a wipe with a damp cloth and a mild cleaner. Brass benefits from a soft cloth buff; unlacquered versions can be polished occasionally if you prefer a bright look rather than a patina. For powder-coated plates, avoid harsh abrasives—stick to gentle cleaners to keep the surface even and matte.
Twice a year, check screws for tightness, clear any debris from brush seals, and add a tiny dab of silicone-friendly lubricant to hinge points if the flap starts to squeak. If coastal air or heavy rain visits your doorway often, these quick touch-ups will keep your letter plate working smoothly for the long haul.
Here’s a plain-English price snapshot to frame your search for mail slot deals in the UK. Entry-level plates often sit at pocket-friendly prices and cover the basics with a single flap in aluminum or simple stainless. Mid-range models cost a bit more and usually add brush seals, double flaps, sturdier springs, and better finishes like solid brass or brushed stainless. Premium options climb higher and deliver heavy-duty metals, precision casting, refined damping, and advanced anti-fishing or shutter features. This tiered view makes comparing offers simple and keeps your budget aligned with your expectations.
Start with your biggest need. Is it warmth? Pick a brush-sealed, double-flap, telescopic design. Is it security? Add anti-fishing geometry and a lockable cage. Is it style? Go for a finish that matches the rest of your door hardware. If you juggle all three, mid-range models with smart accessories tick the boxes without overspending.
Think about your mail habits. If you receive magazines or thick parcels often, choose a wider aperture from the start. If you plan to repaint or swap hardware later, opt for a classic finish like satin stainless or polished brass—both remain easy to match. Flexibility now saves frustration later.
A well-chosen mail slot quietly upgrades daily life. It trims drafts, protects your post, adds a welcome dash of style, and can even boost security. When comparing popular offers, weigh material quality, flap design, insulation, and anti-fishing features alongside price. Measure carefully, match the finish to your hardware, and consider simple add-ons like a mail cage for a cleaner, safer hallway. With a clear plan—and a sharp eye for value—you’ll find a letter plate that looks good, works hard, and lasts.
| Mail Slots | Price | |
|---|---|---|
| Flaplock Locking Letter Plate | £ 54,49 |
