diff --git a/README.md b/README.md
index e338c4f..cb729a6 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,7 @@ Persistence comes with the following defaults:
   -- Set to 0 to always save
   need = 1,
   branch = true, -- use git branch to save session
+  save_when = function() return true end, -- only save session if user defined function returns true
 }
 ```
 
diff --git a/doc/persistence.nvim.txt b/doc/persistence.nvim.txt
index 72d9fc2..a2e94be 100644
--- a/doc/persistence.nvim.txt
+++ b/doc/persistence.nvim.txt
@@ -58,6 +58,7 @@ Persistence comes with the following defaults:
       -- Set to 0 to always save
       need = 1,
       branch = true, -- use git branch to save session
+      save_when = function() return true end, -- only save session if user defined function returns true
     }
 <
 
diff --git a/lua/persistence/config.lua b/lua/persistence/config.lua
index 1589857..7d1fd62 100644
--- a/lua/persistence/config.lua
+++ b/lua/persistence/config.lua
@@ -7,6 +7,7 @@ local defaults = {
   -- Set to 0 to always save
   need = 1,
   branch = true, -- use git branch to save session
+  save_when = function() return true end, -- only save session if user defined function returns true
 }
 
 ---@type Persistence.Config
diff --git a/lua/persistence/init.lua b/lua/persistence/init.lua
index 760f6b6..db46a3a 100644
--- a/lua/persistence/init.lua
+++ b/lua/persistence/init.lua
@@ -55,6 +55,10 @@ function M.start()
         end
       end
 
+      if not Config.options.save_when() then
+        return
+      end
+
       M.save()
       M.fire("SavePost")
     end,