Done.

__init__.py

@@ -1,3 +1,2 @@
 # -*- coding: utf-8 -*-
-import controllers
 import models

__openerp__.py

@@ -1,12 +1,12 @@
 {
     'name' : 'Check mail immediately',
-    'version' : '0.1',
+    'version' : '1.0',
     'author' : 'Ivan Yelizariev',
     'category' : 'Base',
     'website' : 'https://yelizariev.github.io',
     'depends' : ['base', 'web', 'fetchmail', 'mail'],
     'data': [
-        'views.xml',
+        'views.xml', 'security/ir.model.access.csv'
         ],
     'qweb': [
         "static/src/xml/main.xml",

models.py

@@ -1,6 +1,11 @@
 # -*- coding: utf-8 -*-
+import math
+import datetime
 import psycopg2
 
+from openerp.osv import orm
+from openerp.tools.translate import _
+
 from openerp.tools.safe_eval import safe_eval
 from openerp import models, fields, api
 
@@ -11,19 +16,28 @@ class FetchMailServer(models.Model):
 
     _last_updated = None
 
-    run_time = fields.Datetime(string="Launch time", compute='_run_time')
+    run_time = fields.Char(string="Launch time", compute='_run_time')
 
     @classmethod
     def _update_time(cls):
-        cls._last_updated = fields.Datetime.now()
+        cls._last_updated = datetime.datetime.now()
 
     @api.one
     def _run_time(self):
-        self.run_time = self._last_updated
+        if self._last_updated:
+            self.run_time = str(int((datetime.datetime.now() - self._last_updated).total_seconds() / 60))
+        else:
+            self._last_updated = datetime.datetime.now()
+            self.run_time = '0'
 
     @api.model
     def _fetch_mails(self):
+
         super(FetchMailServer, self)._fetch_mails()
+
+        if self._last_updated and (datetime.datetime.now() - self._last_updated) < datetime.timedelta(0,5):
+            raise orm.except_orm( _('Error'), _('Task can be started no earlier than 5 seconds.'))
+
         self._update_time()
 
 
@@ -50,7 +64,6 @@ class FetchMailImmediately(models.Model):
                 (fetchmail_task_id,), log_exceptions=False)
 
             # Got the lock on the job row, run its code
-
             fetchmail_model._fetch_mails()
 
         except psycopg2.OperationalError as e:
@@ -60,4 +73,4 @@ class FetchMailImmediately(models.Model):
                     _('Error'),
                     _('Another process/thread is already busy '
                       'executing this job'))
-            raise
+            raise

security/ir.model.access.csv

@@ -0,0 +1,2 @@
+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_fetchmail_server,fetchmail.server,model_fetchmail_server,base.group_user,1,1,1,1

static/src/js/main.js

@@ -2,8 +2,6 @@ openerp.mail_check_immediately = function(instance, local) {
 
     instance.mail.Wall.include({
         start: function() {
-            var _this = this;
-
             this._super();
             this.get_last_update_time();
             this.get_time_loop()

static/src/xml/main.xml

@@ -5,9 +5,9 @@
             <td t-att-colspan="colspan or '3'">
                 <div class="oe_view_manager_fetch_mail_imm">
                     <span>Last</span>
-                    <a href="#" class="oe_fetch_new_mails"
-                            name="get_fetchmail_obj" type="object">update:</a>
-                    <span class="oe_view_manager_fetch_mail_imm_field">N</span><span> min ago</span>
+                    <a href="#" class="oe_fetch_new_mails">update:</a>
+                    <span class="oe_view_manager_fetch_mail_imm_field">0</span>
+                    <span> minutes ago</span>
                 </div>
             </td>
             <td></td>