diff --git a/projects/ucap-webmessenger-ui-message/src/lib/components/write.component.scss b/projects/ucap-webmessenger-ui-message/src/lib/components/write.component.scss
index aaae0544..5bb4af7e 100644
--- a/projects/ucap-webmessenger-ui-message/src/lib/components/write.component.scss
+++ b/projects/ucap-webmessenger-ui-message/src/lib/components/write.component.scss
@@ -22,12 +22,10 @@
     }
 
     [contenteditable] {
-      transition: padding 0.3s ease-in-out;
     }
 
     [contenteditable]:hover,
     [contenteditable]:focus {
-      padding: 0.25em;
     }
 
     [contenteditable]:hover {
diff --git a/projects/ucap-webmessenger-ui-message/src/lib/dialogs/schedule-send.dialog.component.html b/projects/ucap-webmessenger-ui-message/src/lib/dialogs/schedule-send.dialog.component.html
index 29cafcd3..bd2919dd 100644
--- a/projects/ucap-webmessenger-ui-message/src/lib/dialogs/schedule-send.dialog.component.html
+++ b/projects/ucap-webmessenger-ui-message/src/lib/dialogs/schedule-send.dialog.component.html
@@ -101,14 +101,30 @@
     </div>
   </mat-card-content>
   <mat-card-actions>
-    <div class="editor-actions-spacer"></div>
-    <div class="editor-actions">
-      <button mat-stroked-button (click)="onClickCancel()" class="mat-primary">
-        취소
-      </button>
-      <button mat-stroked-button (click)="onClickSend()" class="mat-primary">
-        예약 발송
-      </button>
+    <div class="actions-container">
+      <div class="actions-message">
+        <span *ngIf="dateIsToEarly">
+          현재 시각으로부터 30분 이후로만 설정 가능합니다.
+        </span>
+      </div>
+      <div class="actions-spacer"></div>
+      <div class="actions">
+        <button
+          mat-stroked-button
+          (click)="onClickCancel()"
+          class="mat-primary"
+        >
+          취소
+        </button>
+        <button
+          mat-stroked-button
+          [disabled]="dateIsToEarly"
+          (click)="onClickSend()"
+          class="mat-primary"
+        >
+          예약 발송
+        </button>
+      </div>
     </div>
   </mat-card-actions>
 </mat-card>
diff --git a/projects/ucap-webmessenger-ui-message/src/lib/dialogs/schedule-send.dialog.component.scss b/projects/ucap-webmessenger-ui-message/src/lib/dialogs/schedule-send.dialog.component.scss
index b5636aec..d48f2547 100644
--- a/projects/ucap-webmessenger-ui-message/src/lib/dialogs/schedule-send.dialog.component.scss
+++ b/projects/ucap-webmessenger-ui-message/src/lib/dialogs/schedule-send.dialog.component.scss
@@ -1,3 +1,18 @@
 .preset-button {
   width: 100%;
 }
+
+.actions-container {
+  display: flex;
+  position: fixed;
+
+  .actions-message {
+  }
+
+  .actions-spacer {
+    flex: 1 1 auto;
+  }
+
+  .actions {
+  }
+}
diff --git a/projects/ucap-webmessenger-ui-message/src/lib/dialogs/schedule-send.dialog.component.ts b/projects/ucap-webmessenger-ui-message/src/lib/dialogs/schedule-send.dialog.component.ts
index accde7e4..e49d9332 100644
--- a/projects/ucap-webmessenger-ui-message/src/lib/dialogs/schedule-send.dialog.component.ts
+++ b/projects/ucap-webmessenger-ui-message/src/lib/dialogs/schedule-send.dialog.component.ts
@@ -23,6 +23,8 @@ export class ScheduleSendDialogComponent implements OnInit {
   hourStep = 1;
   minuteStep = 10;
 
+  dateIsToEarly = false;
+
   get selectedDate() {
     return this._selectedDate;
   }
@@ -31,6 +33,8 @@ export class ScheduleSendDialogComponent implements OnInit {
       this.minuteStep * Math.round(v.minute() / this.minuteStep)
     );
     this._selectedDate = v;
+    const aa = moment().add(30, 'minutes');
+    this.dateIsToEarly = v.isBefore(moment().add(30, 'minutes'));
   }
   // tslint:disable-next-line: variable-name
   private _selectedDate: moment.Moment;
@@ -59,10 +63,10 @@ export class ScheduleSendDialogComponent implements OnInit {
   }
 
   onHourSelected(hour: number) {
-    this.selectedDate.hour(hour);
+    this.selectedDate = this.selectedDate.hour(hour);
   }
   onMinuteSelected(minute: number) {
-    this.selectedDate.minute(minute);
+    this.selectedDate = this.selectedDate.minute(minute);
   }
 
   onClickPresetTommorowMorning() {