diff --git a/modoboa_installer/scripts/__init__.py b/modoboa_installer/scripts/__init__.py
index 219d255..fa87c54 100644
--- a/modoboa_installer/scripts/__init__.py
+++ b/modoboa_installer/scripts/__init__.py
@@ -40,3 +40,16 @@ def backup(config, bashArg, nomail):
     except utils.FatalError as inst:
         utils.printcolor(u"{}".format(inst), utils.RED)
         sys.exit(1)
+
+def restore(restore):
+    """Restore instance"""
+    try:
+        script = importlib.import_module(
+            "modoboa_installer.scripts.restore")
+    except ImportError:
+        print("Error importing restore")
+    try:
+        getattr(script, "Restore")(restore)
+    except utils.FatalError as inst:
+        utils.printcolor(u"{}".format(inst), utils.RED)
+        sys.exit(1)
\ No newline at end of file
diff --git a/modoboa_installer/scripts/amavis.py b/modoboa_installer/scripts/amavis.py
index 4fdc187..d679c98 100644
--- a/modoboa_installer/scripts/amavis.py
+++ b/modoboa_installer/scripts/amavis.py
@@ -1,7 +1,6 @@
 """Amavis related functions."""
 
 import os
-import platform
 
 from .. import package
 from .. import utils
@@ -43,6 +42,10 @@ class Amavis(base.Installer):
     def get_config_files(self):
         """Return appropriate config files."""
         if package.backend.FORMAT == "deb":
+            amavisCustomConf = self.restore + "custom/99-custom"
+            if self.restore and os.path.isfile(amavisCustomConf):
+                utils.printcolor("Restoring custom Amavis configuration", utils.MAGENTA)
+                utils.copy_file(amavisCustomConf, self.config_dir)
             return [
                 "conf.d/05-node_id", "conf.d/15-content_filter_mode",
                 "conf.d/50-user"]
@@ -70,6 +73,14 @@ class Amavis(base.Installer):
 
     def get_sql_schema_path(self):
         """Return schema path."""
+        if self.restore:
+            utils.printcolor("Trying to restore amavis database from backup", utils.MAGENTA)
+            amavisDbBackupPath = self.restore + "databases/amavis.sql"
+            if os.path.isfile(amavisDbBackupPath):
+                utils.printcolor("Amavis database backup found ! Restoring...", utils.GREEN)
+                return amavisDbBackupPath
+            utils.printcolor("Amavis database backup not found, creating empty database", utils.RED)
+
         version = package.backend.get_installed_version("amavisd-new")
         if version is None:
             # Fallback to amavis...
diff --git a/modoboa_installer/scripts/dovecot.py b/modoboa_installer/scripts/dovecot.py
index 3830216..c5a3e45 100644
--- a/modoboa_installer/scripts/dovecot.py
+++ b/modoboa_installer/scripts/dovecot.py
@@ -3,6 +3,7 @@
 import glob
 import os
 import pwd
+import shutil
 
 from .. import database
 from .. import package
@@ -87,6 +88,12 @@ class Dovecot(base.Installer):
 
     def post_run(self):
         """Additional tasks."""
+        if self.restore and len(os.listdir(self.restore + "mails")) > 0:
+            utils.printcolor("Copying mail backup over dovecot directory", utils.MAGENTA)
+            shutil.copytree(self.restore+"mails/vmails", self.home_dir, dirs_exist_ok=True)
+        elif self.restore:
+            utils.printcolor("It seems that mails were not backed up, skipping mail restoration.", utils.MAGENTA)
+
         if self.dbengine == "postgres":
             dbname = self.config.get("modoboa", "dbname")
             dbuser = self.config.get("modoboa", "dbuser")
diff --git a/modoboa_installer/scripts/modoboa.py b/modoboa_installer/scripts/modoboa.py
index adfd9e4..7caa571 100644
--- a/modoboa_installer/scripts/modoboa.py
+++ b/modoboa_installer/scripts/modoboa.py
@@ -1,5 +1,6 @@
 """Modoboa related tasks."""
 
+from genericpath import isfile
 import json
 import os
 import pwd
@@ -176,6 +177,18 @@ class Modoboa(base.Installer):
         self.backend.grant_access(
             self.config.get("amavis", "dbname"), self.dbuser)
 
+
+    def get_sql_schema_path(self):
+        if self.restore:
+            utils.printcolor("Trying to restore modoboa database from backup", utils.MAGENTA)
+            modoboaDbBackupPath = self.restore + "databases/modoboa.sql"
+            if os.path.isfile(modoboaDbBackupPath):
+                utils.printcolor("Modoboa database backup found ! Restoring...", utils.GREEN)
+                return modoboaDbBackupPath
+            utils.printcolor("Modoboa database backup not found, creating empty database", utils.RED)
+
+        return super().get_sql_schema_path()()
+
     def get_packages(self):
         """Include extra packages if needed."""
         packages = super(Modoboa, self).get_packages()
diff --git a/modoboa_installer/scripts/postwhite.py b/modoboa_installer/scripts/postwhite.py
index 239d2d3..c534205 100644
--- a/modoboa_installer/scripts/postwhite.py
+++ b/modoboa_installer/scripts/postwhite.py
@@ -46,6 +46,11 @@ class Postwhite(base.Installer):
         self.install_from_archive(SPF_TOOLS_REPOSITORY, install_dir)
         postw_dir = self.install_from_archive(
             POSTWHITE_REPOSITORY, install_dir)
-        utils.copy_file(os.path.join(postw_dir, "postwhite.conf"), "/etc")
+        postwhiteBackupConf = self.restore+"custom/postwhite.conf"
+        if self.restore and os.path.isfile(postwhiteBackupConf):
+            utils.printcolor("Restoring postwhite.conf backup.", utils.MAGENTA)
+            utils.copy_file(postwhiteBackupConf, "/etc")
+        else:
+            utils.copy_file(os.path.join(postw_dir, "postwhite.conf"), "/etc")
         postw_bin = os.path.join(postw_dir, "postwhite")
         utils.exec_cmd("{} /etc/postwhite.conf".format(postw_bin))
diff --git a/modoboa_installer/scripts/restore.py b/modoboa_installer/scripts/restore.py
new file mode 100644
index 0000000..5a5e690
--- /dev/null
+++ b/modoboa_installer/scripts/restore.py
@@ -0,0 +1,29 @@
+from ctypes import util
+import os
+import sys
+from .. import utils
+
+class Restore:
+    def __init__(self, restore):
+        """Restoring pre-check (backup integriety)"""
+        """REQUIRED : modoboa.sql"""
+        """OPTIONAL : mails/, custom/, amavis.sql, spamassassin.sql"""
+        """Only checking required"""
+
+        try:
+            if not os.path.isdir(restore):
+                utils.printcolor("Provided path is not a directory !", utils.RED)
+                sys.exit(1)
+        except:
+            utils.printcolor("Provided path is not right...", utils.RED)
+            sys.exit(1)
+
+        try:
+            if not os.path.isfile(restore+"databases/modoboa.sql"):
+                utils.printcolor(restore+"databases/modoboa.sql not found, please check your backup", utils.RED)
+                sys.exit(1)
+        except:
+            utils.printcolor(restore+"databases/modoboa.sql not found, please check your backup", utils.RED)
+            sys.exit(1)
+
+        #Everything seems allright here, proceding...
\ No newline at end of file
diff --git a/modoboa_installer/scripts/spamassassin.py b/modoboa_installer/scripts/spamassassin.py
index 49186f4..4466e79 100644
--- a/modoboa_installer/scripts/spamassassin.py
+++ b/modoboa_installer/scripts/spamassassin.py
@@ -25,6 +25,14 @@ class Spamassassin(base.Installer):
 
     def get_sql_schema_path(self):
         """Return SQL schema."""
+        if self.restore:
+            utils.printcolor("Trying to restore spamassassin database from backup", utils.MAGENTA)
+            amavisDbBackupPath = self.restore + "databases/spamassassin.sql"
+            if os.path.isfile(amavisDbBackupPath):
+                utils.printcolor("Spamassassin database backup found ! Restoring...", utils.GREEN)
+                return amavisDbBackupPath
+            utils.printcolor("Spamassassin database backup not found, creating empty database", utils.RED)
+
         if self.dbengine == "postgres":
             fname = "bayes_pg.sql"
         else:
diff --git a/run.py b/run.py
index 901bfdc..6fd95dc 100755
--- a/run.py
+++ b/run.py
@@ -156,6 +156,7 @@ def main(input_args):
         return
     elif args.restore:
         restore_disclamer()
+        scripts.restore(restore)
     else:
         installation_disclaimer(args, config)