diff --git a/app/components/app-header.gjs b/app/components/app-header.gjs
index cbc771c..91ac29e 100644
--- a/app/components/app-header.gjs
+++ b/app/components/app-header.gjs
@@ -7,10 +7,13 @@ import Icon from '#components/icon';
 import UserMenu from '#components/user-menu';
 import SearchBox from '#components/search-box';
 import CategoryChips from '#components/category-chips';
+import { and } from 'ember-truth-helpers';
 
 export default class AppHeaderComponent extends Component {
   @service storage;
   @service settings;
+  @service nostrAuth;
+  @service nostrData;
   @tracked isUserMenuOpen = false;
   @tracked searchQuery = '';
 
@@ -64,9 +67,19 @@ export default class AppHeaderComponent extends Component {
             aria-label="User Menu"
             {{on "click" this.toggleUserMenu}}
           >
-            <div class="user-avatar-placeholder">
-              <Icon @name="user" @size={{20}} @color="white" />
-            </div>
+            {{#if
+              (and this.nostrAuth.isConnected this.nostrData.profile.picture)
+            }}
+              <img
+                src={{this.nostrData.profile.picture}}
+                class="user-avatar"
+                alt="User Avatar"
+              />
+            {{else}}
+              <div class="user-avatar-placeholder">
+                <Icon @name="user" @size={{20}} @color="white" />
+              </div>
+            {{/if}}
           </button>
 
           {{#if this.isUserMenuOpen}}
diff --git a/app/components/user-menu.gjs b/app/components/user-menu.gjs
index 93be100..6b92d66 100644
--- a/app/components/user-menu.gjs
+++ b/app/components/user-menu.gjs
@@ -11,6 +11,7 @@ export default class UserMenuComponent extends Component {
   @service storage;
   @service osmAuth;
   @service nostrAuth;
+  @service nostrData;
 
   @tracked isNostrConnectModalOpen = false;
 
@@ -135,7 +136,7 @@ export default class UserMenuComponent extends Component {
           <div class="account-status">
             {{#if this.nostrAuth.isConnected}}
               <strong title={{this.nostrAuth.pubkey}}>
-                {{this.nostrAuth.pubkey}}
+                {{this.nostrData.userDisplayName}}
               </strong>
             {{else}}
               Not connected
diff --git a/app/services/nostr-auth.js b/app/services/nostr-auth.js
index ccbb4b4..cce17d4 100644
--- a/app/services/nostr-auth.js
+++ b/app/services/nostr-auth.js
@@ -16,6 +16,7 @@ const DEFAULT_CONNECT_RELAY = 'wss://relay.nsec.app';
 
 export default class NostrAuthService extends Service {
   @service nostrRelay;
+  @service nostrData;
 
   @tracked pubkey = null;
   @tracked signerType = null; // 'extension' or 'connect'
@@ -56,6 +57,7 @@ export default class NostrAuthService extends Service {
           this.pubkey = extensionPubkey;
           localStorage.setItem(STORAGE_KEY, this.pubkey);
         }
+        this.nostrData.loadProfile(this.pubkey);
       } catch (e) {
         console.warn('Failed to verify extension nostr pubkey, logging out', e);
         this.disconnect();
@@ -112,6 +114,7 @@ export default class NostrAuthService extends Service {
       this.signerType = 'extension';
       localStorage.setItem(STORAGE_KEY, this.pubkey);
       localStorage.setItem(STORAGE_KEY_TYPE, 'extension');
+      this.nostrData.loadProfile(this.pubkey);
       return this.pubkey;
     } catch (error) {
       console.error('Failed to get public key from extension:', error);
@@ -207,6 +210,8 @@ export default class NostrAuthService extends Service {
         this._signerInstance.remote
       );
 
+      this.nostrData.loadProfile(this.pubkey);
+
       return this.pubkey;
     } catch (error) {
       this.connectStatus = null;
@@ -253,6 +258,7 @@ export default class NostrAuthService extends Service {
     if (pubkey !== this.pubkey) {
       throw new Error('Remote signer pubkey mismatch');
     }
+    this.nostrData.loadProfile(this.pubkey);
   }
 
   async signEvent(event) {
@@ -266,6 +272,7 @@ export default class NostrAuthService extends Service {
 
   async disconnect() {
     this.pubkey = null;
+    this.nostrData?.loadProfile(null);
     this.signerType = null;
     this.connectStatus = null;
     this.connectUri = null;
diff --git a/app/services/nostr-data.js b/app/services/nostr-data.js
new file mode 100644
index 0000000..adf99e9
--- /dev/null
+++ b/app/services/nostr-data.js
@@ -0,0 +1,158 @@
+import Service, { inject as service } from '@ember/service';
+import { tracked } from '@glimmer/tracking';
+import { EventStore } from 'applesauce-core/event-store';
+import { ProfileModel } from 'applesauce-core/models/profile';
+import { MailboxesModel } from 'applesauce-core/models/mailboxes';
+import { npubEncode } from 'applesauce-core/helpers/pointers';
+
+const BOOTSTRAP_RELAYS = [
+  'wss://purplepag.es',
+  'wss://relay.damus.io',
+  'wss://nos.lol',
+];
+
+export default class NostrDataService extends Service {
+  @service nostrRelay;
+  @service nostrAuth;
+
+  store = new EventStore();
+
+  @tracked profile = null;
+  @tracked mailboxes = null;
+  @tracked blossomServers = [];
+
+  _profileSub = null;
+  _mailboxesSub = null;
+  _blossomSub = null;
+
+  _requestSub = null;
+
+  constructor() {
+    super(...arguments);
+
+    // Feed events from the relay pool into the event store
+    this.nostrRelay.pool.relays$.subscribe(() => {
+      // Setup relay subscription tracking if needed, or we just rely on request()
+      // which returns an Observable<NostrEvent>
+    });
+  }
+
+  async loadProfile(pubkey) {
+    if (!pubkey) return;
+
+    // Reset state
+    this.profile = null;
+    this.mailboxes = null;
+    this.blossomServers = [];
+
+    this._cleanupSubscriptions();
+
+    const relays = new Set(BOOTSTRAP_RELAYS);
+
+    // Try to get extension relays
+    if (typeof window.nostr !== 'undefined' && window.nostr.getRelays) {
+      try {
+        const extRelays = await window.nostr.getRelays();
+        for (const url of Object.keys(extRelays)) {
+          relays.add(url);
+        }
+      } catch {
+        console.warn('Failed to get NIP-07 relays');
+      }
+    }
+
+    const relayList = Array.from(relays);
+
+    // Request events and dump them into the store
+    this._requestSub = this.nostrRelay.pool
+      .request(relayList, [
+        {
+          authors: [pubkey],
+          kinds: [0, 10002, 10063],
+        },
+      ])
+      .subscribe({
+        next: (event) => {
+          this.store.add(event);
+        },
+        error: (err) => {
+          console.error('Error fetching profile events:', err);
+        },
+      });
+
+    // Setup models to track state reactively
+    this._profileSub = this.store
+      .model(ProfileModel, pubkey)
+      .subscribe((profileContent) => {
+        this.profile = profileContent;
+      });
+
+    this._mailboxesSub = this.store
+      .model(MailboxesModel, pubkey)
+      .subscribe((mailboxesData) => {
+        this.mailboxes = mailboxesData;
+      });
+
+    this._blossomSub = this.store
+      .replaceable(10063, pubkey)
+      .subscribe((event) => {
+        if (event && event.tags) {
+          this.blossomServers = event.tags
+            .filter((t) => t[0] === 'server' && t[1])
+            .map((t) => t[1]);
+        } else {
+          this.blossomServers = [];
+        }
+      });
+  }
+
+  get userDisplayName() {
+    if (this.profile) {
+      if (this.profile.nip05) {
+        return this.profile.nip05;
+      }
+      if (this.profile.displayName || this.profile.display_name) {
+        return this.profile.displayName || this.profile.display_name;
+      }
+      if (this.profile.name) {
+        return this.profile.name;
+      }
+    }
+
+    // Fallback to npub
+    if (this.nostrAuth.pubkey) {
+      try {
+        const npub = npubEncode(this.nostrAuth.pubkey);
+        return `${npub.slice(0, 9)}...${npub.slice(-4)}`;
+      } catch {
+        return this.nostrAuth.pubkey;
+      }
+    }
+
+    return 'Not connected';
+  }
+
+  _cleanupSubscriptions() {
+    if (this._requestSub) {
+      this._requestSub.unsubscribe();
+      this._requestSub = null;
+    }
+    if (this._profileSub) {
+      this._profileSub.unsubscribe();
+      this._profileSub = null;
+    }
+    if (this._mailboxesSub) {
+      this._mailboxesSub.unsubscribe();
+      this._mailboxesSub = null;
+    }
+    if (this._blossomSub) {
+      this._blossomSub.unsubscribe();
+      this._blossomSub = null;
+    }
+  }
+
+  willDestroy() {
+    super.willDestroy(...arguments);
+    this._cleanupSubscriptions();
+  }
+}
diff --git a/app/styles/app.css b/app/styles/app.css
index 17591ee..d5891b3 100644
--- a/app/styles/app.css
+++ b/app/styles/app.css
@@ -190,7 +190,16 @@ body {
   display: flex;
   align-items: center;
   justify-content: center;
-  box-shadow: 0 2px 5px rgb(0 0 0 / 20%);
+  flex-shrink: 0;
+}
+
+.user-avatar {
+  width: 40px;
+  height: 40px;
+  border-radius: 50%;
+  object-fit: cover;
+  flex-shrink: 0;
+}
 }
 
 /* User Menu Popover */