diff --git a/src/main/java/fr/titionfire/ffsaf/domain/service/AffiliationService.java b/src/main/java/fr/titionfire/ffsaf/domain/service/AffiliationService.java
index 87b3e69..137b125 100644
--- a/src/main/java/fr/titionfire/ffsaf/domain/service/AffiliationService.java
+++ b/src/main/java/fr/titionfire/ffsaf/domain/service/AffiliationService.java
@@ -392,8 +392,27 @@ public class AffiliationService {
         return Panache.withTransaction(() -> repository.deleteById(id));
     }
 
-    public Uni<?> deleteReqAffiliation(long id) {
-        return Panache.withTransaction(() -> repositoryRequest.deleteById(id))
+    public Uni<?> deleteReqAffiliation(long id, String reason) {
+        return repositoryRequest.findById(id)
+                .call(aff -> reactiveMailer.send(
+                        Mail.withText(aff.getM1_email(),
+                                        "FFSAF - Votre demande d'affiliation a été rejetée.",
+                                        String.format(
+                                                """
+                                                        Bonjour,
+                                                        
+                                                        Votre demande d'affiliation pour le club %s a été rejetée pour la/les raison(s) suivante(s):
+                                                        %s
+                                                        
+                                                        Si vous rencontrez un problème ou si vous avez des questions, n'hésitez pas à nous contacter à l'adresse contact@ffsaf.fr.
+                                                        
+                                                        Cordialement,
+                                                        L'équipe de la FFSAF
+                                                        """, aff.getName(), reason)
+                                ).setFrom("FFSAF <no-reply@ffsaf.fr>").setReplyTo("contact@ffsaf.fr")
+                                .addTo(aff.getM2_email(), aff.getM3_email())
+                ))
+                .chain(aff -> Panache.withTransaction(() -> repositoryRequest.delete(aff)))
                 .call(__ -> Utils.deleteMedia(id, media, "aff_request/logo"))
                 .call(__ -> Utils.deleteMedia(id, media, "aff_request/status"));
     }
diff --git a/src/main/java/fr/titionfire/ffsaf/rest/AffiliationRequestEndpoints.java b/src/main/java/fr/titionfire/ffsaf/rest/AffiliationRequestEndpoints.java
index 4529c37..fcb2d6b 100644
--- a/src/main/java/fr/titionfire/ffsaf/rest/AffiliationRequestEndpoints.java
+++ b/src/main/java/fr/titionfire/ffsaf/rest/AffiliationRequestEndpoints.java
@@ -102,12 +102,12 @@ public class AffiliationRequestEndpoints {
             @APIResponse(responseCode = "404", description = "Demande d'affiliation non trouvée")
     })
     public Uni<?> getDelAffRequest(
-            @Parameter(description = "L'identifiant de la demande d'affiliation") @PathParam("id") long id) {
+            @Parameter(description = "L'identifiant de la demande d'affiliation") @PathParam("id") long id, @QueryParam("reason") String reason) {
         return service.getRequest(id).invoke(Unchecked.consumer(o -> {
                     if (o.getClub() == null && !securityCtx.roleHas("federation_admin"))
                         throw new DForbiddenException();
                 })).invoke(o -> checkPerm.accept(o.getClub()))
-                .chain(o -> service.deleteReqAffiliation(id));
+                .chain(o -> service.deleteReqAffiliation(id, reason));
     }
 
     @PUT
diff --git a/src/main/webapp/src/pages/admin/affiliation/AffiliationReqPage.jsx b/src/main/webapp/src/pages/admin/affiliation/AffiliationReqPage.jsx
index c245db8..80424b4 100644
--- a/src/main/webapp/src/pages/admin/affiliation/AffiliationReqPage.jsx
+++ b/src/main/webapp/src/pages/admin/affiliation/AffiliationReqPage.jsx
@@ -38,9 +38,9 @@ export function AffiliationReqPage() {
 function Content({data, refresh}) {
     const navigate = useNavigate();
 
-    const handleRm = (e) => {
+    const handleRm = (reason) => {
         toast.promise(
-            apiAxios.delete(`/affiliation/request/${data.id}`),
+            apiAxios.delete(`/affiliation/request/${data.id}?reason=${encodeURIComponent(reason)}`),
             {
                 pending: "Suppression de la demande d'affiliation en cours",
                 success: "Demande d'affiliation supprimée avec succès 🎉",
@@ -219,8 +219,8 @@ function Content({data, refresh}) {
                         <button type="submit" value="accept" className="btn btn-success">Accepter</button>
                         <button type="submit" value="save" className="btn btn-primary">Enregistrer</button>
                         <button className="btn btn-danger" value="rm" data-bs-toggle="modal" data-bs-target="#confirm-delete">Refuser</button>
-                        <ConfirmDialog title="Refuser la demande" message="Êtes-vous sûr de vouloir refuser cette demande ?"
-                                       onConfirm={handleRm}/>
+                        <ConfirmReasonDialog title="Refuser la demande" message="Êtes-vous sûr de vouloir refuser cette demande ?"
+                                             onConfirm={handleRm}/>
                     </div>
                 </div>
             </div>
@@ -228,6 +228,34 @@ function Content({data, refresh}) {
     </>
 }
 
+function ConfirmReasonDialog({onConfirm, id = "confirm-delete"}) {
+    const [reason, setReason] = useState("")
+    return <div className="modal fade" id={id} tabIndex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
+        <div className="modal-dialog">
+            <div className="modal-content">
+                <div className="modal-header">
+                    <h4 className="modal-title" id="myModalLabel">"Refuser la demande"</h4>
+                </div>
+                <div className="modal-body">
+                    <div className="row mb-3">
+                        <div className="col">
+                            <label htmlFor="reason" className="form-label">Raison du refus</label>
+                            <textarea className="form-control" id="reason" name="reason" rows="3"
+                                      placeholder="Veuillez indiquer la raison du refus" value={reason}
+                                      onChange={e => setReason(e.target.value)}></textarea>
+                        </div>
+                    </div>
+                    <span>Êtes-vous sûr de vouloir refuser cette demande ?</span>
+                </div>
+                <div className="modal-footer">
+                    <button type="button" className="btn btn-default" data-dismiss="modal" data-bs-dismiss="modal">Annuler</button>
+                    <a className="btn btn-danger btn-ok" data-bs-dismiss="modal" onClick={_ => onConfirm(reason)}>Confirmer</a>
+                </div>
+            </div>
+        </div>
+    </div>
+}
+
 function MemberPart({index, member}) {
     const [mode, setMode] = useState(member.licence >= 0 ? 0 : 2)
     const [current, setCurrent] = useState(-1)
@@ -394,4 +422,4 @@ function MemberSimilar({member, current, setCurrent, mode, index, setEmail}) {
             </button>
         })}
     </div>
-}
\ No newline at end of file
+}