What are the four main Royal Mail tariff tiers for marketing post?
Royal Mail's commercial pricing structure for outbound marketing mail is built around four distinct tiers. Each tier has different eligibility rules, volume minimums, format requirements, and unit economics. Understanding where your campaign sits determines whether you pay close to retail price per item or unlock a rate that makes direct mail genuinely competitive against digital channels.
The tiers, from lowest to highest unit cost, are Mailmark, Advertising Mail, Partially Addressed Mail, and Standard 2nd Class. That ordering is a rough guide; actual prices depend on weight, format, sortation level, and annual volume commitments negotiated directly with Royal Mail or via a mailing house.
Mailmark: the lowest per-item rate
Mailmark is Royal Mail's barcode-based bulk mailing service and, for large-volume campaigns, the cheapest route to market. Every item in a Mailmark posting carries a two-dimensional barcode that Royal Mail's automated sorting equipment reads at intake. That barcode encodes the recipient's postcode, the posting reference, and a sequence number, which lets Royal Mail track items through the network and provides the sender with delivery confirmation data.
To access Mailmark pricing directly, you need a Mailmark Mailing Verification Account (MVA) with Royal Mail. The MVA requires an approved software solution for address management and barcode generation, and a deposit against anticipated postage spend. For most smaller senders, the setup overhead is prohibitive. The practical route is to post through a Royal Mail-approved mailing house, which holds its own MVA and passes the bulk rate through to clients with a handling charge on top. The net cost still beats Standard 2nd Class substantially.
Mailmark supports letter and large letter formats. Items must be machine-readable, which in practice means a standard white or off-white envelope with the address in a clear window or printed directly, no metallic inks or heavy textures that confuse optical character recognition. Pre-sorted mailings, where the sender deposits items sorted to Merlin (walk-level) sequence, attract the deepest discounts.
Advertising Mail: the accessible bulk tariff
Advertising Mail (often shortened to Admail) is Royal Mail's named bulk tariff for promotional content. It does not require barcoding in the way Mailmark does, though barcoded Advertising Mail still qualifies for Mailmark rates when the MVA conditions are met. The minimum posting quantity is 500 items per event, and the item must be substantially promotional rather than transactional in nature. A catalogue, a sale flyer, or a prospecting letter all qualify. An invoice does not.
Format eligibility matters. Advertising Mail covers letters (up to 240mm x 165mm, maximum 100g) and large letters (up to 353mm x 250mm, maximum 750g). A campaign piece that exceeds large letter dimensions, say a rolled poster or a boxed gift, moves into packet pricing, which carries no comparable bulk discount. Campaign designers who stretch format to maximise impact sometimes discover too late that they have priced themselves out of the Advertising Mail tier; it is worth checking envelope dimensions before briefing a designer.
Advertising Mail pricing is split by weight band and, like Mailmark, by sortation level. Residue mail (items Royal Mail sorts itself) costs more than pre-sorted mail. Most mailing houses include sortation in their service.
Partially Addressed Mail: targeting without personal data
Partially Addressed Mail (PAM) sits between conventional named direct mail and the fully anonymous Door to Door product. A PAM item carries a postcode and a household-level descriptor, typically "The Householder" or "The Occupier", rather than a named individual's details. Because no personal data is processed in the ordinary sense, PAM bypasses many of the data-minimisation questions that arise when building a prospecting file from a purchased or compiled source.
PAM is delivered by postmen on their standard delivery walks, so it arrives with the day's named mail rather than as a separate bundle. That tends to improve open rates compared with Door to Door, where recipients know the item is unsolicited. The format requirements mirror Advertising Mail: letter and large letter only, minimum 500 items.
The targeting mechanism for PAM relies on Royal Mail's own demographic data at postcode sector level. You select the sectors that match your audience profile, and Royal Mail delivers one item to each household in those sectors. You do not receive or hold any individual addresses. For a national retailer targeting affluent urban postcodes, or a regional energy supplier targeting high-consumption rural areas, PAM offers a practical middle ground between Door to Door's blunt geography and named-contact direct mail's data requirements.
One practical note on GDPR: because PAM does not involve processing named individuals' personal data, the usual questions about lawful basis, suppression washing, and consent records do not apply to the Royal Mail posting itself. However, if you are combining PAM with any internal CRM data or suppression logic (for example, suppressing postcodes where you already have active customers), that suppression step does process personal data and should be handled accordingly.
Standard 2nd Class: the catch-all, highest per-item cost
Standard 2nd Class is the retail tariff most people recognise from buying stamps. There is no minimum volume, no format restriction beyond the physical dimensions Royal Mail accepts, and no account or software requirement. You can frank items using a standard franking machine or affix stamps. The unit cost for a 60g letter at retail 2nd Class is materially higher than any of the three bulk tiers, often double the Mailmark equivalent.
For marketing use, Standard 2nd Class only makes sense for very small test volumes, perhaps 50 to 100 personalised items sent to a highly targeted list, where the bulk minimum thresholds are impractical. A startup running a pilot campaign to 200 prospects is a reasonable use case. A mid-sized business running a quarterly customer newsletter to 2,000 people at Standard 2nd Class rates is simply leaving money on the table.
Royal Mail marketing post tariff comparison
The table below summarises the key differences across the four tiers. Indicative prices are for a 60g letter-format item as a rough guide; actual rates are agreed with Royal Mail or a mailing house and change annually.
| Tariff | Min. volume | Barcoding required | Named addressee | Format eligible | Relative unit cost | Access route |
|---|---|---|---|---|---|---|
| Mailmark | Typically 1,000+ (account-dependent) | Yes (2D Mailmark barcode) | Yes | Letter, large letter | Lowest (baseline) | Own MVA or mailing house |
| Advertising Mail | 500 items per posting | No (optional) | Yes | Letter, large letter | Low to medium | Royal Mail account or mailing house |
| Partially Addressed Mail | 500 items per posting | No | No (householder only) | Letter, large letter | Medium | Royal Mail account or mailing house |
| Standard 2nd Class | None | No | Yes (or none) | Letter, large letter, packet | Highest (30%–60% above Mailmark) | Stamps, franking machine, Post Office |
What are the format specs for letter and large letter marketing mail?
Format classification is binary: an item is either a letter, a large letter, or a packet. The boundaries are precise and non-negotiable. Getting format wrong at the point of deposit means Royal Mail will either reject the mailing or re-rate it at packet prices on the spot.
A letter must fall within these dimensions: minimum 100mm x 70mm, maximum 240mm x 165mm. Thickness: 0.25mm to 5mm. Maximum weight: 100g. A large letter must fall within: minimum 100mm x 70mm, maximum 353mm x 250mm. Thickness: 1mm to 25mm. Maximum weight: 750g. Any item exceeding the large letter envelope on any single dimension, or weighing more than 750g, is a packet. Packet tariffs start materially higher and carry no Advertising Mail equivalent.
The practical implication: a DL envelope with a standard folded A4 letter inside is a letter. A C5 envelope with a brochure inside is a large letter. A C4 flat-pack envelope is a large letter provided it stays under 353mm x 250mm and 750g. A box, a tube, or an oversized flat falls into packet.
Thickness is the dimension campaigns most often misstep on. A heavy staple-bound brochure in a C5 envelope can push the package past 5mm and out of letter classification even if the envelope itself looks like a letter. If your creative team is specifying a premium paper stock, check the finished-item thickness before the print run.
How does barcoding work, and why does it matter for cost?
The Mailmark barcode is a 2D Data Matrix code printed directly on the envelope (or label), positioned within a precise quiet zone near the address block. Royal Mail's automated sortation equipment reads the barcode at intake, tracking the item through each stage of the network. Senders with an MVA receive scan-event data back: accepted, in transit, delivered. That delivery confirmation is valuable for campaign measurement and for any regulated sector where proof of dispatch matters.
The barcoding requirement is what enables Royal Mail to offer the deepest bulk discounts. Because barcoded mail feeds directly into automated sorting without manual intervention, Royal Mail's handling cost per item is lower, and a portion of that saving is passed to the sender. Unbarcoded Advertising Mail requires more manual handling at some stages and is priced accordingly.
For senders working through a mailing house, the barcode generation happens transparently as part of the mailing house's production process. The sender supplies the address file; the mailing house formats addresses, generates barcodes, prints, encloses, and deposits. The barcode itself is not something the sender needs to think about operationally.
How do you access bulk rates: mailing house vs direct account?
There are two ways to post at bulk tariffs. The first is to set up a direct account with Royal Mail, obtain a Business Account, and for Mailmark specifically, create a Mailing Verification Account with a deposit. The second is to use a mailing house that already holds these relationships and pools volumes across many clients.
A direct Royal Mail Business Account is appropriate if you are posting consistently above 5,000 items per month, have in-house production capability (envelope stuffing, franking or barcode printing), and want full control over the posting schedule. You deal directly with Royal Mail, negotiate your rates based on annual volume, and have a named account manager for volume commitments above a certain threshold.
A mailing house is the practical route for most marketing teams. The mailing house prints, personalises, encloses, sorts, barcodes, and deposits on your behalf. Because it aggregates volumes from dozens or hundreds of clients, it can offer access to Mailmark rates on postings as small as a few hundred items, making bulk pricing available well below the thresholds a single sender could reach alone. The fee structure is typically a per-item print-and-post charge that includes postage, with no separate Royal Mail account setup required from the client.
In our experience, brands that do not have a dedicated direct mail team almost always benefit from a mailing house relationship, particularly at volumes below 20,000 items per mailing. The setup overhead of direct Royal Mail accounts is real, and the internal resource cost of managing that setup often exceeds the marginal postage saving within the first year.
What is Door to Door and how does it differ from the four main tariffs?
Door to Door is a Royal Mail product that sits outside the standard letter-tariff structure. There is no addressee, no envelope address, and no connection to an individual's name or personal data. Royal Mail delivers a specified quantity of identical items to every property on a defined set of delivery walks, or to every property in a postcode sector. The sender selects walks on a geographic basis using Royal Mail's Door to Door targeting tool, which allows some demographic filtering at walk level.
Pricing for Door to Door is structured per thousand items rather than per item, and per walk coverage rather than per volume tier. A typical national Door to Door campaign covering millions of properties is priced on a bespoke basis with a Royal Mail commercial team.
The key distinctions versus PAM are worth being explicit about. PAM arrives with standard named mail, so recipients perceive it similarly to addressed post. Door to Door arrives separately, often in a bundle with other door-drop material, which some recipients associate with lower-priority promotional content. PAM allows postcode-sector targeting linked to demographic profiling (because Royal Mail holds data about the composition of each sector); Door to Door targeting is walk-level geographic only with cruder demographic overlay. PAM has a per-item structure comparable to Advertising Mail; Door to Door is a separate pricing framework entirely.
For a campaign targeting specific consumer profiles, say homeowners in a particular age bracket or postcode band, PAM or a named-contact mailing from a targeted consumer file will generally outperform Door to Door on response rate per item. Door to Door makes sense for broad-coverage awareness activity, such as a new supermarket opening announcing itself to every household within a two-mile radius.
How do Royal Mail tariff choices interact with list selection?
The tariff you choose partly determines what kind of data you need. Mailmark and Advertising Mail require fully addressed, named items, which means you need a postal address file with verified, deliverable addresses. A list with 10% undeliverable addresses wastes postage at any tariff, but the waste is proportionally more painful at Mailmark rates when you have made a volume commitment.
Postal cleansing, including a Royal Mail PAF (Postcode Address File) validation pass and an NCOA (National Change of Address) wash, is standard practice before any bulk mailing. The PAF confirms the address is deliverable; the NCOA flags records where the occupant has moved and registered a forwarding address. Skipping these steps inflates your effective cost-per-delivered-item significantly, and in the worst case, a high undeliverable rate on a Mailmark posting can trigger a conversation with your mailing house about data quality.
For PAM, you do not need individual addresses. The targeting input is a list of postcode sectors or delivery walks, which you select based on demographic or geographic criteria. The quality question shifts from address accuracy to sector selection: are the walks you have chosen genuinely the ones where your target audience lives? Good sector selection for PAM relies on the same kind of data analysis used for list selection in named-contact mail.
See our forthcoming guide on direct mail list selection in the UK for more detail on how to match list type to tariff. For the economics of the channel overall, our piece on UK direct mail ROI benchmarks for 2026 sets out typical response rates and cost-per-acquisition figures across different list and format combinations.