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module</span></a></div></ul></nav></div></div></aside><main class=docMainContainer_TBSr><div class="container padding-top--md padding-bottom--lg"><div class=row><div class="col docItemCol_VOVn"><div class=docItemContainer_Djhp><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label=Breadcrumbs><ul class=breadcrumbs><li class=breadcrumbs__item><a aria-label="Home page" class=breadcrumbs__link href=/><svg viewBox="0 0 24 24" class=breadcrumbHomeIcon_YNFT><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill=currentColor /></svg></a><li class=breadcrumbs__item><span class=breadcrumbs__link>Get started</span><li class="breadcrumbs__item breadcrumbs__item--active"><span class=breadcrumbs__link>FAQ: Logos Messaging</span></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type=button class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>FAQ: Logos Messaging</h1></header>
<h4 class="anchor anchorTargetStickyNavbar_Vzrq" id=review-common-questions-about-how-logos-messaging-works-and-how-to-build-on-it>Review common questions about how Logos Messaging works and how to build on it.<a href=#review-common-questions-about-how-logos-messaging-works-and-how-to-build-on-it class=hash-link aria-label="Direct link to Review common questions about how Logos Messaging works and how to build on it." title="Direct link to Review common questions about how Logos Messaging works and how to build on it." translate=no></a></h4>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=what-is-logos-messaginglogos-delivery>What is Logos Messaging,Logos Delivery?<a href=#what-is-logos-messaginglogos-delivery class=hash-link aria-label="Direct link to What is Logos Messaging,Logos Delivery?" title="Direct link to What is Logos Messaging,Logos Delivery?" translate=no></a></h2>
<p><a href=https://docs.logos.co/get-started/glossary#logos-messaging target=_blank rel="noopener noreferrer" class="">Logos Messaging</a> is the messaging component of the Logos technology stack, composed of <a href=https://docs.logos.co/get-started/glossary#logos-delivery target=_blank rel="noopener noreferrer" class="">Logos Delivery</a> and <a href=https://docs.logos.co/get-started/glossary#logos-chat target=_blank rel="noopener noreferrer" class="">Logos Chat</a>. Logos Delivery is a peer-to-peer messaging network with DoS protection via RLN (Rate Limiting Nullifiers). Any application can use it to send and receive messages over an open, censorship-resistant network.</p>
<p>Logos Chat is a protocol and library that provides 1:1 and group conversations with end-to-end encryption using de-MLS - everything an application needs to add private chat without rolling its own protocol.</p>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=does-messaging-require-a-gas-fee>Does messaging require a gas fee?<a href=#does-messaging-require-a-gas-fee class=hash-link aria-label="Direct link to Does messaging require a gas fee?" title="Direct link to Does messaging require a gas fee?" translate=no></a></h2>
<p>No, sending and receiving messages using Logos Messaging involves no gas fee.</p>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=what-encryption-does-logos-delivery-use>What encryption does Logos Delivery use?<a href=#what-encryption-does-logos-delivery-use class=hash-link aria-label="Direct link to What encryption does Logos Delivery use?" title="Direct link to What encryption does Logos Delivery use?" translate=no></a></h2>
<p>Logos Delivery uses libp2p noise encryption for node-to-node connections. However, no default encryption method is applied to the data sent over the network. This design choice enhances Logos Delivery's encryption flexibility, encouraging developers to use custom protocols or Logos Delivery message payload encryption methods freely.</p>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=where-does-logos-delivery-store-the-messages>Where does Logos Delivery store the messages?<a href=#where-does-logos-delivery-store-the-messages class=hash-link aria-label="Direct link to Where does Logos Delivery store the messages?" title="Direct link to Where does Logos Delivery store the messages?" translate=no></a></h2>
<p>Logos Delivery's <a class="" href=/messaging/concepts/protocols#store>Store protocol</a> is designed to temporarily store messages within the network. However, Logos Delivery does not guarantee the message's availability and recommends using <a href=https://logos.co/technology-stack/storage target=_blank rel="noopener noreferrer" class="">Logos Storage</a> for long-term storage.</p>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=can-logos-delivery-only-be-used-for-wallet-to-wallet-messaging>Can Logos Delivery only be used for wallet-to-wallet messaging?<a href=#can-logos-delivery-only-be-used-for-wallet-to-wallet-messaging class=hash-link aria-label="Direct link to Can Logos Delivery only be used for wallet-to-wallet messaging?" title="Direct link to Can Logos Delivery only be used for wallet-to-wallet messaging?" translate=no></a></h2>
<p>No, Logos Delivery is flexible and imposes no specific rules on identifiers.</p>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=how-does-logos-delivery-differ-from-ipfs>How does Logos Delivery differ from IPFS?<a href=#how-does-logos-delivery-differ-from-ipfs class=hash-link aria-label="Direct link to How does Logos Delivery differ from IPFS?" title="Direct link to How does Logos Delivery differ from IPFS?" translate=no></a></h2>
<p>Logos Delivery focuses on short, ephemeral, real-time messages, while IPFS focuses on large, long-term data storage. Although there's an overlap between the two technologies, Logos Delivery does not currently support large data for privacy reasons.</p>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=what-are-rate-limiting-nullifiers-rln>What are Rate Limiting Nullifiers (RLN)?<a href=#what-are-rate-limiting-nullifiers-rln class=hash-link aria-label="Direct link to What are Rate Limiting Nullifiers (RLN)?" title="Direct link to What are Rate Limiting Nullifiers (RLN)?" translate=no></a></h2>
<p><a class="" href=/messaging/concepts/protocols#rln-relay>Rate Limiting Nullifier</a> is a zero-knowledge (ZK) protocol enabling spam protection in a decentralised network while preserving privacy. Each message must be accompanied by a ZK proof, which <a class="" href=/messaging/concepts/protocols#relay>Relay</a> nodes verify to ensure the publishers do not send more messages than they are allowed. The ZK proof does not leak any private information about message publishers - it only proves they are members of a set of users allowed to publish a certain number of messages per given time frame.</div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="row margin-top--sm theme-doc-footer-edit-meta-row"><div class="col noPrint_WFHX"><a href=https://github.com/logos-co/logos-docs/tree/main/docs/messaging/get-started/faq-logos-messaging.md target=_blank rel="noopener noreferrer" class=theme-edit-this-page><svg fill=currentColor height=20 width=20 viewBox="0 0 40 40" class=iconEdit_Z9Sw aria-hidden=true><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"/></g></svg>Edit this page</a></div><div class="col lastUpdated_JAkA"></div></div></footer></article><nav class="docusaurus-mt-lg pagination-nav" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href=/messaging/get-started/send-1-1-messages-logos-chat><div class=pagination-nav__sublabel>Previous</div><div class=pagination-nav__label>Send 1:1 messages with the Logos Chat app</div></a><a class="pagination-nav__link pagination-nav__link--next" href=/messaging/delivery/use-logos-delivery-module-api-from-app><div class=pagination-nav__sublabel>Next</div><div class=pagination-nav__label>Use the Logos Delivery module API from an app</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href=#what-is-logos-messaginglogos-delivery class="table-of-contents__link toc-highlight">What is Logos Messaging,Logos Delivery?</a><li><a href=#does-messaging-require-a-gas-fee class="table-of-contents__link toc-highlight">Does messaging require a gas fee?</a><li><a href=#what-encryption-does-logos-delivery-use class="table-of-contents__link toc-highlight">What encryption does Logos Delivery use?</a><li><a href=#where-does-logos-delivery-store-the-messages class="table-of-contents__link toc-highlight">Where does Logos Delivery store the messages?</a><li><a href=#can-logos-delivery-only-be-used-for-wallet-to-wallet-messaging class="table-of-contents__link toc-highlight">Can Logos Delivery only be used for wallet-to-wallet messaging?</a><li><a href=#how-does-logos-delivery-differ-from-ipfs class="table-of-contents__link toc-highlight">How does Logos Delivery differ from IPFS?</a><li><a href=#what-are-rate-limiting-nullifiers-rln class="table-of-contents__link toc-highlight">What are Rate Limiting Nullifiers (RLN)?</a></ul></div></div></div></div></main></div></div></div><footer class="theme-layout-footer footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="theme-layout-footer-column col footer__col"><div class=footer__title>Docs</div><ul class="footer__items clean-list"><li class=footer__item><a class=footer__link-item href=/get-started/what-is-logos>Get started</a></ul></div><div class="theme-layout-footer-column col footer__col"><div class=footer__title>Community</div><ul class="footer__items clean-list"><li class=footer__item><a href=https://github.com/logos-co/logos-docs target=_blank rel="noopener noreferrer" class=footer__link-item>GitHub<svg width=13.5 height=13.5 aria-label="(opens in new tab)" class=iconExternalLink_nPIU><use href=#theme-svg-external-link /></svg></a></ul></div></div><div class="footer__bottom text--center"><div class=footer__copyright>Copyright © 2026 Logos. Built with Docusaurus.</div></div></div></footer></div></body>