diff --git a/activities/models/post.py b/activities/models/post.py
index 342e4b5..6cc93fa 100644
--- a/activities/models/post.py
+++ b/activities/models/post.py
@@ -94,6 +94,9 @@ class PostStates(StateGraph):
         """
         For remote posts, sees if we can delete them every so often.
         """
+        # Skip all of this if the horizon is zero
+        if settings.SETUP.REMOTE_PRUNE_HORIZON <= 0:
+            return
         # To be a candidate for deletion, a post must be remote and old enough
         if instance.local:
             return
diff --git a/docs/releases/0.10.rst b/docs/releases/0.10.rst
index 8ce4377..646dce3 100644
--- a/docs/releases/0.10.rst
+++ b/docs/releases/0.10.rst
@@ -13,7 +13,11 @@ This release's major changes:
   most situations (the context switching was costing more than the gains from
   talking to other servers asynchronously).
 
-* TBC
+* Old remote posts are now automatically pruned out of the database after a
+  configurable horizon time, defaulting to 90 days. Posts from local users and
+  posts that have been interacted with (liked, boosted, pinned) by local users
+  are never deleted. You can change the deletion horizon with the
+  ``TAKAHE_REMOTE_PRUNE_HORIZON`` setting.
 
 Minor changes also include:
 
@@ -33,17 +37,16 @@ or use the image name ``jointakahe/takahe:0.10``.
 Upgrade Notes
 -------------
 
-VAPID keys and Push notifications
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Remote Pruning
+~~~~~~~~~~~~~~
 
-Takahē now supports push notifications if you supply a valid VAPID keypair as
-the ``TAKAHE_VAPID_PUBLIC_KEY`` and ``TAKAHE_VAPID_PRIVATE_KEY`` environment
-variables. You can generate a keypair via `https://web-push-codelab.glitch.me/`_.
-
-Note that users of apps may need to sign out and in again to their accounts for
-the app to notice that it can now do push notifications. Some apps, like Elk,
-may cache the fact your server didn't support it for a while.
+Post pruning is now in and comes *enabled by default*, as it is not directly
+destructive (it will only delete content that has not been interacted with
+locally and which can be re-fetched).
 
+Nevertheless, if you want to avoid post deletion triggering on your server at
+all, you should set the ``TAKAHE_REMOTE_PRUNE_HORIZON`` environment variable to
+``0``.
 
 Migrations
 ~~~~~~~~~~
diff --git a/docs/releases/0.11.rst b/docs/releases/0.11.rst
new file mode 100644
index 0000000..29fe2e5
--- /dev/null
+++ b/docs/releases/0.11.rst
@@ -0,0 +1,21 @@
+0.11
+====
+
+*Released: Not Yet Released*
+
+Notes TBD.
+
+
+Upgrade Notes
+-------------
+
+VAPID keys and Push notifications
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Takahē now supports push notifications if you supply a valid VAPID keypair as
+the ``TAKAHE_VAPID_PUBLIC_KEY`` and ``TAKAHE_VAPID_PRIVATE_KEY`` environment
+variables. You can generate a keypair via `https://web-push-codelab.glitch.me/`_.
+
+Note that users of apps may need to sign out and in again to their accounts for
+the app to notice that it can now do push notifications. Some apps, like Elk,
+may cache the fact your server didn't support it for a while.
diff --git a/docs/tuning.rst b/docs/tuning.rst
index 5c59678..772a193 100644
--- a/docs/tuning.rst
+++ b/docs/tuning.rst
@@ -221,6 +221,17 @@ read-through cache that respects ``Cache-Control``, like Varnish, will
 also help if placed in front of Takahē.
 
 
+Remote Content Pruning
+----------------------
+
+By default, Takahē will prune (delete) any remote posts or identities that
+haven't been interacted with after 90 days. You can change this using the
+``TAKAHE_REMOTE_PRUNE_HORIZON`` environment variable, which accepts an integer
+number of days as its value.
+
+Setting this environment variable to ``0`` disables this feature entirely.
+
+
 Sentry.io integration
 ---------------------