diff --git a/src/main/java/ru/ulstu/conference/service/ConferenceNotificationService.java b/src/main/java/ru/ulstu/conference/service/ConferenceNotificationService.java
index c69d862..39472aa 100644
--- a/src/main/java/ru/ulstu/conference/service/ConferenceNotificationService.java
+++ b/src/main/java/ru/ulstu/conference/service/ConferenceNotificationService.java
@@ -16,15 +16,14 @@ public class ConferenceNotificationService {
 
     private final static int DAYS_TO_DEADLINE_NOTIFICATION = 7;
     private final static String TEMPLATE_DEADLINE = "conferenceDeadlineNotification";
-    private final static String TEMPLATE_CREATE_CONFERENCE = "conferenceCreateNotification";
-    private final static String TEMPLATE_STATUS_CHANGED = "conferenceChangeNotification";
-    private final static String TEMPLATE_FAILED = "conferenceFailedNotification";
+    private final static String TEMPLATE_CREATE = "conferenceCreateNotification";
+    private final static String TEMPLATE_UPDATE_DEADLINES = "conferenceUpdateDeadlinesNotification";
+    private final static String TEMPLATE_UPDATE_DATES = "conferenceUpdateDatesNotification";
 
     private final static String TITLE_DEADLINE = "Приближается дедлайн конференции";
     private final static String TITLE_CREATE = "Создана новая конференция: %s";
-    private final static String TITLE_STATUS_CHANGED = "Изменения в конференции";
-    private final static String TITLE_FAILED = "Статья провалена";
-
+    private final static String TITLE_UPDATE_DEADLINES = "Изменения дедлайнов в конференции: %s";
+    private final static String TITLE_UPDATE_DATES = "Изменение дат проведения конференции: %s";
 
     private final MailService mailService;
     private final UserService userService;
@@ -57,7 +56,17 @@ public class ConferenceNotificationService {
 
     public void sendCreateNotification(Conference conference) {
         Map<String, Object> variables = ImmutableMap.of("conference", conference);
-        sendForAllUsers(variables, TEMPLATE_CREATE_CONFERENCE, String.format(TITLE_CREATE, conference.getTitle()));
+        sendForAllUsers(variables, TEMPLATE_CREATE, String.format(TITLE_CREATE, conference.getTitle()));
+    }
+
+    public void updateDeadlineNotification(Conference conference) {
+        Map<String, Object> variables = ImmutableMap.of("conference", conference);
+        sendForAllParticipals(variables, conference, TEMPLATE_UPDATE_DEADLINES, String.format(TITLE_UPDATE_DEADLINES, conference.getTitle()));
+    }
+
+    public void updateConferencesDatesNotification(Conference conference, Date oldBeginDate, Date oldEndDate) {
+        Map<String, Object> variables = ImmutableMap.of("conference", conference, "oldBeginDate", oldBeginDate, "oldEndDate", oldEndDate);
+        sendForAllParticipals(variables, conference, TEMPLATE_UPDATE_DATES, String.format(TITLE_UPDATE_DATES, conference.getTitle()));
     }
 
     //    public void statusChangeNotification(Paper paper, Paper.PaperStatus oldStatus) {
@@ -77,4 +86,6 @@ public class ConferenceNotificationService {
     private void sendForAllParticipals(Map<String, Object> variables, Conference conference, String template, String title) {
         conference.getUsers().forEach(conferenceUser -> mailService.sendEmailFromTemplate(variables, conferenceUser.getUser(), template, title));
     }
+
+
 }
diff --git a/src/main/java/ru/ulstu/conference/service/ConferenceService.java b/src/main/java/ru/ulstu/conference/service/ConferenceService.java
index bed0deb..af43ae9 100644
--- a/src/main/java/ru/ulstu/conference/service/ConferenceService.java
+++ b/src/main/java/ru/ulstu/conference/service/ConferenceService.java
@@ -10,6 +10,7 @@ import ru.ulstu.conference.model.ConferenceDto;
 import ru.ulstu.conference.model.ConferenceFilterDto;
 import ru.ulstu.conference.model.ConferenceUser;
 import ru.ulstu.conference.repository.ConferenceRepository;
+import ru.ulstu.deadline.model.Deadline;
 import ru.ulstu.deadline.service.DeadlineService;
 import ru.ulstu.paper.model.Paper;
 import ru.ulstu.paper.service.PaperService;
@@ -22,6 +23,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Date;
 import java.util.List;
+import java.util.stream.Collectors;
 
 import static org.springframework.util.ObjectUtils.isEmpty;
 import static ru.ulstu.core.util.StreamApiUtils.convert;
@@ -101,7 +103,13 @@ public class ConferenceService {
     @Transactional
     public Integer update(ConferenceDto conferenceDto) throws IOException {
         Conference conference = conferenceRepository.findOne(conferenceDto.getId());
+        List<Deadline> oldDeadlines = conference.getDeadlines().stream()
+                .map(this::copyDeadline)
+                .collect(Collectors.toList());
+        Date oldBeginDate = conference.getBeginDate();
+        Date oldEndDate = conference.getEndDate();
         conferenceRepository.save(copyFromDto(conference, conferenceDto));
+        sendNotificationAfterUpdate(conference, oldDeadlines, oldBeginDate, oldEndDate);
         conferenceDto.getRemovedDeadlineIds().forEach(deadlineService::remove);
         return conference.getId();
     }
@@ -228,4 +236,36 @@ public class ConferenceService {
         modelMap.addAttribute("nearshoreSales", nearshoreSales);
         modelMap.addAttribute("offshoreSales", offshoreSales);
     }
+
+    public void sendNotificationAfterUpdate(Conference conference, List<Deadline> oldDeadlines, Date oldBeginDate, Date oldEndDate) {
+        boolean isSendNotificationAboutDeadlines = false;
+        if (oldDeadlines.size() != conference.getDeadlines().size()) {
+            isSendNotificationAboutDeadlines = true;
+        }
+        for (Deadline deadline : conference.getDeadlines()) {
+            if (isSendNotificationAboutDeadlines) {
+                break;
+            }
+            for (Deadline oldDeadline : oldDeadlines) {
+                if (deadline.getId().equals(oldDeadline.getId())) {
+                    if (!deadline.getDescription().equals(oldDeadline.getDescription()) || !deadline.getDate().equals(oldDeadline.getDate())) {
+                        isSendNotificationAboutDeadlines = true;
+                        break;
+                    }
+                }
+            }
+        }
+        if (isSendNotificationAboutDeadlines) {
+            conferenceNotificationService.updateDeadlineNotification(conference);
+        }
+        if (!conference.getBeginDate().equals(oldBeginDate) || !conference.getEndDate().equals(oldEndDate)) {
+            conferenceNotificationService.updateConferencesDatesNotification(conference, oldBeginDate, oldEndDate);
+        }
+    }
+
+    public Deadline copyDeadline(Deadline oldDeadline) {
+        Deadline newDeadline = new Deadline(oldDeadline.getDate(), oldDeadline.getDescription());
+        newDeadline.setId(oldDeadline.getId());
+        return newDeadline;
+    }
 }
diff --git a/src/main/resources/mail_templates/conferenceUpdateDatesNotification.html b/src/main/resources/mail_templates/conferenceUpdateDatesNotification.html
new file mode 100644
index 0000000..479336f
--- /dev/null
+++ b/src/main/resources/mail_templates/conferenceUpdateDatesNotification.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+    <title>Уведомление об изменении дат проведения конференции</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
+    <link rel="shortcut icon" th:href="@{|${baseUrl}/favicon.ico|}"/>
+</head>
+<body>
+<p>
+    Уважаемый(ая) <span th:text="${user.firstName + ' ' + user.lastName}">Ivan Ivanov</span>
+</p>
+<p>
+    Даты проведения конференции "<a th:href="@{|${baseUrl}/conferences/conference?id=${conference.id}|}">
+    <span th:text="${conference.title}">Title</span></a>" изменились с <br/>
+    "<span th:text="${#dates.format(oldBeginDate, 'dd.MM.yyyy')}">oldBeginDate</span>"
+    -
+    "<span th:text="${#dates.format(oldEndDate, 'dd.MM.yyyy')}">oldEndDate</span>"
+    <br/>
+
+    на <br/>
+    "<span th:text="${#dates.format(conference.beginDate, 'dd.MM.yyyy')}"></span>"
+    -
+    "<span th:text="${#dates.format(conference.endDate, 'dd.MM.yyyy')}"></span>".
+</p>
+<p>
+    Regards,
+    <br/>
+    <em>NG-tracker.</em>
+</p>
+</body>
+</html>
\ No newline at end of file
diff --git a/src/main/resources/mail_templates/conferenceUpdateDeadlinesNotification.html b/src/main/resources/mail_templates/conferenceUpdateDeadlinesNotification.html
new file mode 100644
index 0000000..f010fb8
--- /dev/null
+++ b/src/main/resources/mail_templates/conferenceUpdateDeadlinesNotification.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+    <title>Уведомление об изменении дедлайнов конференции</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
+    <link rel="shortcut icon" th:href="@{|${baseUrl}/favicon.ico|}"/>
+</head>
+<body>
+<p>
+    Уважаемый(ая) <span th:text="${user.firstName + ' ' + user.lastName}">Ivan Ivanov</span>
+</p>
+<p>
+    Дедлайны конференции "<a th:href="@{|${baseUrl}/conferences/conference?id=${conference.id}|}">
+    <span th:text="${conference.title}">Title</span></a>" притерпели изменения.
+    <br/>
+    Ознакомтесь с изменениями.
+</p>
+<p>
+    Regards,
+    <br/>
+    <em>NG-tracker.</em>
+</p>
+</body>
+</html>
\ No newline at end of file