Recent changes to 334: Mailmark 2D postcode format.https://sourceforge.net/p/zint/tickets/334/2026-03-20T14:46:55.164000ZRecent changes to 334: Mailmark 2D postcode format.#334 Mailmark 2D postcode format.2026-03-20T14:46:55.164000Z2026-03-20T14:46:55.164000ZGit Losthttps://sourceforge.net/u/gitlost/https://sourceforge.netabd35199bc0e847b357f60a1bb1da7a6d59bb3ae<div class="markdown_content"><ul>
<li><strong>status</strong>: open --> closed</li>
</ul></div>#334 Mailmark 2D postcode format.2025-04-08T23:22:16.939000Z2025-04-08T23:22:16.939000ZGit Losthttps://sourceforge.net/u/gitlost/https://sourceforge.netcb0be9472d9caed90b6b8130f43005754f067583<div class="markdown_content"><p>Thanks Milton, hopefully commit <a class="alink" href="/p/zint/code/ci/182c84fa4d348d63b43b0305a9bca0f712666e0f/">[182c84]</a> has addressed this. There's a later document available at <a href="https://www.royalmail.com/sites/royalmail.com/files/2024-12/Mailmark-Barcode-definition-document-181224-v1_5-final.pdf" rel="nofollow">https://www.royalmail.com/sites/royalmail.com/files/2024-12/Mailmark-Barcode-definition-document-181224-v1_5-final.pdf</a>, but it doesn't change the DPS/RTS stuff, all the best, Martin</p></div>Mailmark 2D postcode format.2025-04-08T03:46:41.995000Z2025-04-08T03:46:41.995000ZMilton Nealhttps://sourceforge.net/u/miltonneal/https://sourceforge.neta63d951a22c64366209c3331fba3f9a2e0d41912<div class="markdown_content"><p>Looking at the code for generating Mailmark 2D barcodes, the Destination post code + Destination Point format checking uses the same peice code as for Mailmark 4 state(CL) check. According to to <a href="https://www.royalmailwholesale.com/mint-project/uploads/337237901.pdf" rel="nofollow">https://www.royalmailwholesale.com/mint-project/uploads/337237901.pdf</a><br/>
Mailmark 2D uses different post code formats, and also appears not to used the reduced alpha set<br/>
(–C,I,K,M,O or V). Also according to this document, the Return To Sender post code only 7 characters, ie no DPS. The Zint code adds a dummy DPS then varifies it with the same code as for Mailmark 4 state(CL). The above document is dated 25/09/2020, so its reasonably recent, or is there another document I should be referencing?</p></div>Mailmark 2D postcode format.2025-04-08T03:46:41.995000Z2025-04-08T03:46:41.995000ZMilton Nealhttps://sourceforge.net/u/miltonneal/https://sourceforge.neta930fc3b1488dffb01b267d1592e02b93f506351<div class="markdown_content"><p>Ticket 334 has been modified: Mailmark 2D postcode format.<br/>
Edited By: Git Lost (gitlost)<br/>
Status updated: 'open' => 'closed'</p></div>