diff --git a/src/frontend/app/administration/sendmail/sendmail-administration.component.html b/src/frontend/app/administration/sendmail/sendmail-administration.component.html
index 255c4bf2261bfaaa068773bb68076f352cef15ce..6ef8191613c2e50031e25c960c2772fb8d83cdda 100644
--- a/src/frontend/app/administration/sendmail/sendmail-administration.component.html
+++ b/src/frontend/app/administration/sendmail/sendmail-administration.component.html
@@ -86,7 +86,7 @@
                                 <div class="col-md-12">
                                     <mat-form-field>
                                         <input name="mailFrom" [(ngModel)]="sendmail.from" [disabled]="sendmail.type != 'smtp'"
-                                            matInput placeholder="{{lang.mailFrom}}">
+                                            matInput placeholder="{{lang.mailFrom}}" pattern="(^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$)">
                                     </mat-form-field>
                                 </div>
                             </div>
@@ -108,7 +108,7 @@
                 <div class="form-group" [style.opacity]="sendmail.type != 'smtp' ? '0.5' : '1'">
                     <div class="col-md-12">
                         <mat-form-field>
-                            <input matInput placeholder="Adresse d'envoi" [(ngModel)]="recipientTest" [disabled]="emailSendLoading">
+                            <input matInput placeholder="{{lang.mailTo}}" [(ngModel)]="recipientTest" [disabled]="emailSendLoading">
                             <mat-icon *ngIf="!emailSendLoading" title="{{lang.beginSendTest}}" (click)="testEmailSend()" color="primary" style="cursor: pointer;" matSuffix
                                 class="fa fa-paper-plane fa-2x"></mat-icon>
                         </mat-form-field>
diff --git a/src/frontend/lang/lang-en.ts b/src/frontend/lang/lang-en.ts
index 1c69b35457d3b6ca9c17491b3a0a80d65f22de45..3b981745b63a5077a2565a4c3eeb1114c444c8ed 100755
--- a/src/frontend/lang/lang-en.ts
+++ b/src/frontend/lang/lang-en.ts
@@ -732,6 +732,7 @@ export const LANG_EN = {
     "configurationUpdated"                              : "Configuration updated",
     "port"                                              : "Port",
     "mailFrom"                                          : "Mail address used",
+    "mailTo"                                            : "Mail address destination",
     "eraseAllFilters"                                   : "Erase all filters",
     "isMulticontact"                                    : "Multi-contact",
     "emailSendTest"                                     : "Email send test",
diff --git a/src/frontend/lang/lang-fr.ts b/src/frontend/lang/lang-fr.ts
index c8a350c7ab45ee01f4d4980c38360e84c2bf0611..f3731aa844fcd014ac6bd4d038c29e0f3215d236 100755
--- a/src/frontend/lang/lang-fr.ts
+++ b/src/frontend/lang/lang-fr.ts
@@ -757,7 +757,8 @@ export const LANG_FR = {
     "undefined"                                         : "Non défini",
     "configurationUpdated"                              : "Configuration mise à jour",
     "port"                                              : "Port",
-    "mailFrom"                                          : "Adresse e-mail utilisée",
+    "mailFrom"                                          : "Adresse d'envoi",
+    "mailTo"                                            : "Adresse de réception",
     "eraseAllFilters"                                   : "Effacer tous les filtres",
     "isMulticontact"                                    : "Multi-contact",
     "emailSendTest"                                     : "Test d'envoi",
diff --git a/src/frontend/lang/lang-nl.ts b/src/frontend/lang/lang-nl.ts
index 83b87099525ad80eb365e64244eb537b5ad436ec..3d6de2e89e6df5bfe88af745e22f04506f3a72fa 100755
--- a/src/frontend/lang/lang-nl.ts
+++ b/src/frontend/lang/lang-nl.ts
@@ -760,6 +760,7 @@ export const LANG_NL = {
     "configurationUpdated" : "_TO_TRANSLATE",
     "port" : "_TO_TRANSLATE",
     "mailFrom" : "_TO_TRANSLATE",
+    "mailTo" : "_TO_TRANSLATE",
     "eraseAllFilters" : "_TO_TRANSLATE",
     "isMulticontact" : "_TO_TRANSLATE",
     "emailSendTest" : "_TO_TRANSLATE",