diff --git a/ghost/core/core/server/models/post-revision.js b/ghost/core/core/server/models/post-revision.js
index 042a825669..24b0c5562f 100644
--- a/ghost/core/core/server/models/post-revision.js
+++ b/ghost/core/core/server/models/post-revision.js
@@ -36,8 +36,8 @@ const PostRevision = ghostBookshelf.Model.extend({
     toJSON(unfilteredOptions) {
         const options = PostRevision.filterOptions(unfilteredOptions, 'toJSON');
         const attrs = ghostBookshelf.Model.prototype.toJSON.call(this, options);
-        // CASE: only for internal accuracy
-        delete attrs.created_at_ts;
+
+        // We embed the full author object, so no need to send the author_id
         delete attrs.author_id;
         return attrs;
     }
diff --git a/ghost/core/core/server/models/post.js b/ghost/core/core/server/models/post.js
index 7aaee24100..d6129ef731 100644
--- a/ghost/core/core/server/models/post.js
+++ b/ghost/core/core/server/models/post.js
@@ -37,6 +37,7 @@ const messages = {
 
 const MOBILEDOC_REVISIONS_COUNT = 10;
 const POST_REVISIONS_COUNT = 10;
+const POST_REVISIONS_INTERVAL_MS = 10 * 60 * 1000; // 10 minutes
 const ALL_STATUSES = ['published', 'draft', 'scheduled', 'sent'];
 
 let Post;
@@ -905,7 +906,8 @@ Post = ghostBookshelf.Model.extend({
             if (!model.get('mobiledoc') && !options.importing && !options.migrating) {
                 const postRevisions = new PostRevisions({
                     config: {
-                        max_revisions: POST_REVISIONS_COUNT
+                        max_revisions: POST_REVISIONS_COUNT,
+                        revision_interval_ms: POST_REVISIONS_INTERVAL_MS
                     }
                 });
                 const authorId = this.contextUser(options);
@@ -913,7 +915,7 @@ Post = ghostBookshelf.Model.extend({
                     const revisionModels = await ghostBookshelf.model('PostRevision')
                         .findAll(Object.assign({
                             filter: `post_id:${model.id}`,
-                            columns: ['id', 'lexical', 'created_at', 'author_id', 'title', 'reason', 'post_status']
+                            columns: ['id', 'lexical', 'created_at', 'author_id', 'title', 'reason', 'post_status', 'created_at_ts']
                         }, _.pick(options, 'transacting')));
 
                     const revisions = revisionModels.toJSON();
diff --git a/ghost/core/test/e2e-api/admin/__snapshots__/posts.test.js.snap b/ghost/core/test/e2e-api/admin/__snapshots__/posts.test.js.snap
index e4e8c5a1db..cae522470b 100644
--- a/ghost/core/test/e2e-api/admin/__snapshots__/posts.test.js.snap
+++ b/ghost/core/test/e2e-api/admin/__snapshots__/posts.test.js.snap
@@ -831,7 +831,7 @@ exports[`Posts API Create Can create a post with lexical 2: [headers] 1`] = `
 Object {
   "access-control-allow-origin": "http://127.0.0.1:2369",
   "cache-control": "no-cache, private, no-store, must-revalidate, max-stale=0, post-check=0, pre-check=0",
-  "content-length": "5363",
+  "content-length": "5396",
   "content-type": "application/json; charset=utf-8",
   "content-version": StringMatching /v\\\\d\\+\\\\\\.\\\\d\\+/,
   "etag": StringMatching /\\(\\?:W\\\\/\\)\\?"\\(\\?:\\[ !#-\\\\x7E\\\\x80-\\\\xFF\\]\\*\\|\\\\r\\\\n\\[\\\\t \\]\\|\\\\\\\\\\.\\)\\*"/,
@@ -1261,7 +1261,7 @@ exports[`Posts API Update Can update a post with lexical 2: [headers] 1`] = `
 Object {
   "access-control-allow-origin": "http://127.0.0.1:2369",
   "cache-control": "no-cache, private, no-store, must-revalidate, max-stale=0, post-check=0, pre-check=0",
-  "content-length": "5249",
+  "content-length": "5333",
   "content-type": "application/json; charset=utf-8",
   "content-version": StringMatching /v\\\\d\\+\\\\\\.\\\\d\\+/,
   "etag": StringMatching /\\(\\?:W\\\\/\\)\\?"\\(\\?:\\[ !#-\\\\x7E\\\\x80-\\\\xFF\\]\\*\\|\\\\r\\\\n\\[\\\\t \\]\\|\\\\\\\\\\.\\)\\*"/,
@@ -1371,7 +1371,7 @@ exports[`Posts API Update Can update a post with lexical 4: [headers] 1`] = `
 Object {
   "access-control-allow-origin": "http://127.0.0.1:2369",
   "cache-control": "no-cache, private, no-store, must-revalidate, max-stale=0, post-check=0, pre-check=0",
-  "content-length": "6619",
+  "content-length": "6685",
   "content-type": "application/json; charset=utf-8",
   "content-version": StringMatching /v\\\\d\\+\\\\\\.\\\\d\\+/,
   "etag": StringMatching /\\(\\?:W\\\\/\\)\\?"\\(\\?:\\[ !#-\\\\x7E\\\\x80-\\\\xFF\\]\\*\\|\\\\r\\\\n\\[\\\\t \\]\\|\\\\\\\\\\.\\)\\*"/,
diff --git a/ghost/post-revisions/lib/post-revisions.js b/ghost/post-revisions/lib/post-revisions.js
index 5a48005a61..b0ed841108 100644
--- a/ghost/post-revisions/lib/post-revisions.js
+++ b/ghost/post-revisions/lib/post-revisions.js
@@ -31,6 +31,7 @@ class PostRevisions {
      * @param {object} deps
      * @param {object} deps.config
      * @param {number} deps.config.max_revisions
+     * @param {number} deps.config.revision_interval_ms
      * @param {object} deps.model
      */
     constructor(deps) {
@@ -57,11 +58,19 @@ class PostRevisions {
         }
 
         const forceRevision = options && options.forceRevision;
-        const lexicalHasChangedSinceLatestRevision = latestRevision.lexical !== current.lexical;
-        const titleHasChanged = latestRevision.title !== current.title;
         const featuredImagedHasChanged = latestRevision.feature_image !== current.feature_image;
-        if ((lexicalHasChangedSinceLatestRevision || titleHasChanged || featuredImagedHasChanged) && forceRevision) {
-            return {value: true, reason: 'explicit_save'};
+        const lexicalHasChanged = latestRevision.lexical !== current.lexical;
+        const titleHasChanged = latestRevision.title !== current.title;
+        // CASE: we only want to save a revision if something has changed since the previous revision
+        if (lexicalHasChanged || titleHasChanged || featuredImagedHasChanged) {
+            // CASE: user has explicitly requested a revision by hitting cmd+s or leaving the editor
+            if (forceRevision) {
+                return {value: true, reason: 'explicit_save'};
+            }
+            // CASE: it's been X mins since the last revision, so we should save a new one
+            if ((Date.now() - latestRevision.created_at_ts) > this.config.revision_interval_ms) {
+                return {value: true, reason: 'background_save'};
+            }
         }
         return {value: false};
     }
diff --git a/ghost/post-revisions/test/hello.test.js b/ghost/post-revisions/test/hello.test.js
index 22d14bda43..7d32847572 100644
--- a/ghost/post-revisions/test/hello.test.js
+++ b/ghost/post-revisions/test/hello.test.js
@@ -3,7 +3,8 @@ const sinon = require('sinon');
 const PostRevisions = require('..');
 
 const config = {
-    max_revisions: 10
+    max_revisions: 10,
+    revision_interval_ms: 1000
 };
 
 describe('PostRevisions', function () {
@@ -58,7 +59,8 @@ describe('PostRevisions', function () {
                 html: 'blah',
                 title: 'blah2'
             }, [{
-                lexical: 'blah'
+                lexical: 'blah',
+                title: 'not blah'
             }], {
                 forceRevision: true
             });
@@ -103,6 +105,22 @@ describe('PostRevisions', function () {
 
             assert.deepEqual(actual, expected);
         });
+
+        it('should return true if the latest revision was more than the interval', function () {
+            const postRevisions = new PostRevisions({config});
+
+            const expected = {value: true, reason: 'background_save'};
+            const actual = postRevisions.shouldGenerateRevision({
+                lexical: 'blah',
+                html: 'blah',
+                title: 'blah'
+            }, [{
+                lexical: 'blah',
+                created_at_ts: Date.now() - 2000
+            }], {});
+
+            assert.deepEqual(actual, expected);
+        });
     });
 
     describe('getRevisions', function () {