diff -urN ../postfixadmin-cd73f275.orig/model/MailboxHandler.php ./model/MailboxHandler.php
--- ../postfixadmin-cd73f275.orig/model/MailboxHandler.php	2021-09-02 23:45:38.000000000 +0300
+++ ./model/MailboxHandler.php	2021-10-08 18:53:50.055086000 +0300
@@ -47,7 +47,7 @@
             # read_from_db_postprocess() also sets 'quotabytes' for use in init()
             # TODO: read used quota from quota/quota2 table
             'active'           => pacol(1,          1,      1,      'bool', 'active'                        , ''                                 , 1 ),
-            'welcome_mail'     => pacol($this->new, $this->new, 0,  'bool', 'pCreate_mailbox_mail'          , ''                                 , 1,
+            'welcome_mail'     => pacol($this->new, $this->new, 0,  'bool', 'pCreate_mailbox_mail'          , ''                                 , 0,
                 /*options*/ array(),
                 /*not_in_db*/ 1             ),
             'phone'            => pacol(1,  $reset_by_sms,  0,      'text', 'pCreate_mailbox_phone'         , 'pCreate_mailbox_phone_desc'       , ''),