diff --git a/client/.env b/client/.env
index 0038af3..57f426c 100644
--- a/client/.env
+++ b/client/.env
@@ -1,4 +1,4 @@
-# VITE_API_URL=http://localhost:3001
+VITE_API_URL=http://localhost:3001
 # VITE_API_URL=http://192.168.1.171:3001
-VITE_API_URL=https://crm.stream.graff.tech/api
+# VITE_API_URL=https://crm.stream.graff.tech/api
 VITE_STREAM_URL=https://stream.graff.tech
diff --git a/client/src/components/Calendar.tsx b/client/src/components/Calendar.tsx
index 7aef853..7ddd861 100644
--- a/client/src/components/Calendar.tsx
+++ b/client/src/components/Calendar.tsx
@@ -1,11 +1,13 @@
 import {
   addMonths,
   format,
+  getDay,
   getDaysInMonth,
-  getISODay,
   isSameDay,
   isToday,
   setDate,
+  startOfDay,
+  startOfMonth,
   subMonths,
 } from "date-fns";
 import { useState } from "react";
@@ -22,7 +24,9 @@ import useStore from "../stores/useStore";
 function Calendar() {
   const { selectedDay, setSelectedDay } = useStore();
   const { isShowCalendar, setIsShowCalendar } = useSettingsStore();
-  const [currentMonth, setCurrentMonth] = useState<Date>(new Date());
+  const [currentMonth, setCurrentMonth] = useState<Date>(
+    startOfMonth(startOfDay(new Date()))
+  );
 
   function selectPrevMonth() {
     setCurrentMonth(subMonths(currentMonth, 1));
@@ -74,11 +78,11 @@ function Calendar() {
             ))}
           </div>
           <div className="grid grid-cols-7 gap-2">
-            {Array.from({ length: getISODay(currentMonth) - 1 }).map(
-              (_, index) => (
-                <div key={index} className="w-8 h-8"></div>
-              )
-            )}
+            {Array.from({
+              length: getDay(startOfDay(startOfMonth(currentMonth))) - 1,
+            }).map((_, index) => (
+              <div key={index} className="w-8 h-8"></div>
+            ))}
             {Array.from({ length: getDaysInMonth(currentMonth) }).map(
               (_, index) => (
                 <button
diff --git a/client/src/components/Card.tsx b/client/src/components/Card.tsx
index 75fe451..a31e0f3 100644
--- a/client/src/components/Card.tsx
+++ b/client/src/components/Card.tsx
@@ -9,7 +9,7 @@ import { Link } from "react-router-dom";
 import IUser from "../types/IUser";
 import useAuthStore from "../stores/useAuthStore";
 import EntryIcon from "./icons/EntryIcon";
-import { isAfter } from "date-fns";
+import { isAfter, subMinutes } from "date-fns";
 
 interface CardProps {
   companyId: string;
@@ -112,7 +112,10 @@ function Card({
           <div className="flex gap-2">
             {user?.role === "manager" &&
               (manager ? (
-                isAfter(new Date(), new Date(scheduleSessionStartAt)) ? (
+                isAfter(
+                  new Date(),
+                  subMinutes(new Date(scheduleSessionStartAt), 10)
+                ) ? (
                   <Link
                     to={`${
                       import.meta.env.VITE_STREAM_URL
diff --git a/server/package.json b/server/package.json
index f9712e7..992f312 100644
--- a/server/package.json
+++ b/server/package.json
@@ -15,6 +15,7 @@
     "express": "^4.18.2",
     "jsonwebtoken": "^9.0.2",
     "mongoose": "^7.5.1",
+    "nodemailer": "^6.9.14",
     "uuid": "^9.0.1"
   },
   "devDependencies": {
@@ -23,6 +24,7 @@
     "@types/express": "^4.17.17",
     "@types/jsonwebtoken": "^9.0.2",
     "@types/node": "^20.5.9",
+    "@types/nodemailer": "^6.4.15",
     "@types/uuid": "^9.0.6",
     "nodemon": "^3.0.1",
     "ts-node": "^10.9.1",
diff --git a/server/src/index.ts b/server/src/index.ts
index bad67de..34ce590 100644
--- a/server/src/index.ts
+++ b/server/src/index.ts
@@ -5,7 +5,6 @@ import cors from "cors";
 import loginRouter from "./routes/login";
 import registrationRouter from "./routes/registration";
 import authMiddleware from "./middlewares/auth";
-import appRouter from "./routes/app";
 import companiesRouter from "./routes/companies";
 import usersRouter from "./routes/users";
 import buildsRouter from "./routes/builds";
@@ -27,7 +26,6 @@ app.use("/actions", actionsRouter);
 app.use("/builds", buildsRouter);
 app.use("/scheduled_sessions", scheduledSessionsRoute);
 app.use("/schedules", schedulesRouter);
-app.use("/app", authMiddleware, appRouter);
 app.use("/companies", authMiddleware, companiesRouter);
 app.use("/users", authMiddleware, usersRouter);
 
diff --git a/server/src/routes/app.ts b/server/src/routes/app.ts
deleted file mode 100644
index 67d38fd..0000000
--- a/server/src/routes/app.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-import { Router } from "express";
-import Company from "../models/Company";
-
-const appRouter = Router();
-
-appRouter.post("/", async (_req, res) => {
-  await Company.find();
-
-  res.json({ route: "app" });
-});
-
-export default appRouter;
diff --git a/server/src/routes/scheduledSessions.ts b/server/src/routes/scheduledSessions.ts
index 0a30e9c..191e897 100644
--- a/server/src/routes/scheduledSessions.ts
+++ b/server/src/routes/scheduledSessions.ts
@@ -10,6 +10,7 @@ import {
   parseISO,
   startOfDay,
 } from "date-fns";
+import { createTransport } from "nodemailer";
 
 const router = Router();
 
@@ -79,7 +80,7 @@ router.post("/", async (req, res) => {
   if (!buildId || !startAt) {
     return res.json({
       status: "error",
-      message: "Parameters `buildId`, `startAt` are required!", // Параметры `compamyId`, `buildId`, `startAt`, `client` обязательны!
+      message: "Parameters `buildId`, `startAt` are required!", // Параметры `buildId`, `startAt` обязательны!
     });
   }
 
@@ -207,10 +208,43 @@ router.post("/", async (req, res) => {
     endAt: endAtISO,
   });
 
+  const url = `https://stream.graff.tech/scheduled/${scheduledSession.id}`;
+
+  // <-- Send an mail
+
+  if (client?.email) {
+    // create reusable transporter object using the default SMTP transport
+    let transporter = createTransport({
+      host: "mail.netangels.ru",
+      port: 587,
+      secure: false, // true for 465, false for other ports
+      auth: {
+        user: "stream@graff.tech", // generated ethereal user
+        pass: "zLUbt8Io7dh2F9KT", // generated ethereal password
+      },
+    });
+
+    // send mail with defined transport object
+    try {
+      await transporter.sendMail({
+        from: "stream@graff.tech", // sender address
+        to: client.email, // list of receivers
+        subject: "Приглашение на демонстрацию - stream.graff.tech", // Subject line
+        html: `<div>
+                Ссылка для подключения к демонстрации: <a href="${url}" target="_blank">${url}</a>
+              </div>`,
+      });
+    } catch (error) {
+      console.log("error", (error as Error).message);
+    }
+  }
+
+  // Send an mail -->
+
   res.json({
     status: "success",
     scheduledSessionId: scheduledSession.id,
-    url: `https://stream.graff.tech/scheduled/${scheduledSession.id}`,
+    url,
   });
 });
 
diff --git a/server/yarn.lock b/server/yarn.lock
index 953c3f9..fefa5e6 100644
--- a/server/yarn.lock
+++ b/server/yarn.lock
@@ -154,6 +154,13 @@
   dependencies:
     undici-types "~5.26.4"
 
+"@types/nodemailer@^6.4.15":
+  version "6.4.15"
+  resolved "https://registry.yarnpkg.com/@types/nodemailer/-/nodemailer-6.4.15.tgz#494be695e11c438f7f5df738fb4ab740312a6ed2"
+  integrity sha512-0EBJxawVNjPkng1zm2vopRctuWVCxk34JcIlRuXSf54habUWdz1FB7wHDqOqvDa8Mtpt0Q3LTXQkAs2LNyK5jQ==
+  dependencies:
+    "@types/node" "*"
+
 "@types/qs@*":
   version "6.9.11"
   resolved "https://registry.yarnpkg.com/@types/qs/-/qs-6.9.11.tgz#208d8a30bc507bd82e03ada29e4732ea46a6bbda"
@@ -996,6 +1003,11 @@ node-fetch@^2.6.7:
   dependencies:
     whatwg-url "^5.0.0"
 
+nodemailer@^6.9.14:
+  version "6.9.14"
+  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.9.14.tgz#845fda981f9fd5ac264f4446af908a7c78027f75"
+  integrity sha512-Dobp/ebDKBvz91sbtRKhcznLThrKxKt97GI2FAlAyy+fk19j73Uz3sBXolVtmcXjaorivqsbbbjDY+Jkt4/bQA==
+
 nodemon@^3.0.1:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/nodemon/-/nodemon-3.0.3.tgz#244a62d1c690eece3f6165c6cdb0db03ebd80b76"