diff --git a/ghost/core/core/server/services/email-rendering/finalize.js b/ghost/core/core/server/services/email-rendering/finalize.js
index 56f897248ca..04e830c8bda 100644
--- a/ghost/core/core/server/services/email-rendering/finalize.js
+++ b/ghost/core/core/server/services/email-rendering/finalize.js
@@ -32,6 +32,11 @@ const finalizeHtml = (html) => {
     html = html.replace(/“/g, '“');
     html = html.replace(/”/g, '”');
 
+    // Fix unnecessary hex-entity encoding of forward slashes that may
+    // be introduced by cheerio/juice serialization.
+    // Refs https://github.com/TryGhost/Ghost/issues/26905
+    html = html.replace(/&#(?:[xX]2[fF]|47);/g, '/');
+
     return html;
 };
 
diff --git a/ghost/core/core/server/services/email-service/email-renderer.js b/ghost/core/core/server/services/email-service/email-renderer.js
index 8f586593fc0..29628b113e6 100644
--- a/ghost/core/core/server/services/email-service/email-renderer.js
+++ b/ghost/core/core/server/services/email-service/email-renderer.js
@@ -567,9 +567,6 @@ class EmailRenderer {
 
         // TODO: normalizeReplacementStrings (replace unsupported replacement strings)
 
-        // Convert HTML to plaintext
-        const plaintext = htmlToPlaintext.email(html);
-
         // Fix any unsupported chars in Outlook
         html = html.replace(/'/g, ''');
         html = html.replace(/→/g, '→');
@@ -577,6 +574,17 @@ class EmailRenderer {
         html = html.replace(/“/g, '“');
         html = html.replace(/”/g, '”');
 
+        // Fix unnecessary hex-entity encoding of forward slashes that may
+        // be introduced by cheerio/juice serialization. These entities are
+        // invalid in text/plain email parts and can appear as literal text
+        // in inbox previews or plain-text email clients.
+        // Refs https://github.com/TryGhost/Ghost/issues/26905
+        html = html.replace(/&#(?:[xX]2[fF]|47);/g, '/');
+
+        // Convert HTML to plaintext (must run after entity fixes above so the
+        // plaintext version also contains clean, decoded text)
+        const plaintext = htmlToPlaintext.email(html);
+
         return {
             html,
             plaintext,
diff --git a/ghost/core/test/unit/server/services/email-service/email-renderer.test.js b/ghost/core/test/unit/server/services/email-service/email-renderer.test.js
index c1b2666a001..cca7741a171 100644
--- a/ghost/core/test/unit/server/services/email-service/email-renderer.test.js
+++ b/ghost/core/test/unit/server/services/email-service/email-renderer.test.js
@@ -2381,6 +2381,54 @@ describe('Email renderer', function () {
                 }
             });
         });
+
+        it('does not encode forward slashes as hex entities in HTML or plaintext', async function () {
+            // Refs https://github.com/TryGhost/Ghost/issues/26905
+            // i18next with escapeValue:true encodes / as / in interpolated
+            // values, which appear as literal text in plaintext email parts.
+            const post = createModel(Object.assign({}, basePost, {
+                published_at: new Date(2026, 2, 19),
+                authors: [
+                    createModel({name: 'Author/Name'})
+                ]
+            }));
+            const newsletter = createModel({
+                header_image: null,
+                name: 'Test Newsletter',
+                show_badge: true,
+                feedback_enabled: true,
+                show_share_button: true,
+                show_post_title_section: true
+            });
+            const segment = null;
+            const options = {};
+
+            const response = await emailRenderer.renderBody(
+                post,
+                newsletter,
+                segment,
+                options
+            );
+
+            // Author name and published date must appear with raw characters
+            // and free of slash-related HTML entities.
+            // Compute the expected date the same way the email renderer does.
+            const {DateTime} = require('luxon');
+            const expectedDate = DateTime.fromJSDate(new Date(2026, 2, 19)).setZone('Etc/UTC').setLocale('en-gb').toLocaleString({
+                year: 'numeric', month: 'short', day: 'numeric'
+            });
+
+            const slashEntities = ['/', '/', '/', '/'];
+            for (const entity of slashEntities) {
+                assert.equal(response.html.includes(entity), false, `HTML should not contain ${entity}`);
+                assert.equal(response.plaintext.includes(entity), false, `Plaintext should not contain ${entity}`);
+            }
+
+            assert.equal(response.html.includes('Author/Name'), true, 'HTML should contain author name with raw slash');
+            assert.equal(response.html.includes(expectedDate), true, 'HTML should contain formatted date');
+            assert.equal(response.plaintext.includes('Author/Name'), true, 'Plaintext should contain author name with raw slash');
+            assert.equal(response.plaintext.includes(expectedDate), true, 'Plaintext should contain formatted date');
+        });
     });
 
     describe('getTemplateData', function () {