[FIX] mail: help user using scheduled date field on mail

Followup of odoo/odoo@582ac8d

Task-2860761

closes odoo#95062

Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>

addons/mail/i18n/mail.pot

@@ -3235,7 +3235,8 @@ msgstr ""
 #: model:ir.model.fields,help:mail.field_mail_mail__scheduled_date
 msgid ""
 "If set, the queue manager will send the email after the date. If not set, "
-"the email will be send as soon as possible."
+"the email will be send as soon as possible. Unless a timezone is specified, "
+"it is considered as being in UTC timezone."
 msgstr ""
 
 #. module: mail

addons/mail/models/mail_mail.py

@@ -81,7 +81,7 @@ def default_get(self, fields):
         'Auto Delete',
         help="This option permanently removes any track of email after it's been sent, including from the Technical menu in the Settings, in order to preserve storage space of your Odoo database.")
     scheduled_date = fields.Char('Scheduled Send Date',
-        help="If set, the queue manager will send the email after the date. If not set, the email will be send as soon as possible.")
+        help="If set, the queue manager will send the email after the date. If not set, the email will be send as soon as possible. Unless a timezone is specified, it is considered as being in UTC timezone.")
 
     @api.model_create_multi
     def create(self, values_list):