diff --git a/config/settings/base.py b/config/settings/base.py
index 7fa588fff..9c51438b0 100644
--- a/config/settings/base.py
+++ b/config/settings/base.py
@@ -399,6 +399,8 @@
 
 BREVO_TENDERS_AUTHOR_SUPER_SIAES_TEMPLATE_ID = env.int("BREVO_TENDERS_AUTHOR_SUPER_SIAES_TEMPLATE_ID", 61)
 
+BREVO_TENDERS_MIN_AMOUNT_TO_SEND = env.int("BREVO_TENDERS_MIN_AMOUNT_TO_SEND", 34998)
+
 # -- hubspot
 HUBSPOT_API_KEY = env.str("HUBSPOT_API_KEY", "set-it")
 HUBSPOT_IS_ACTIVATED = env.bool("HUBSPOT_IS_ACTIVATED", False)
diff --git a/lemarche/tenders/admin.py b/lemarche/tenders/admin.py
index 1e42e043c..4d087d1e5 100644
--- a/lemarche/tenders/admin.py
+++ b/lemarche/tenders/admin.py
@@ -1,5 +1,6 @@
 from ckeditor.widgets import CKEditorWidget
 from django import forms
+from django.conf import settings
 from django.contrib import admin
 from django.contrib.contenttypes.admin import GenericTabularInline
 from django.core.exceptions import ValidationError
@@ -21,6 +22,7 @@
 from lemarche.users import constants as user_constants
 from lemarche.users.models import User
 from lemarche.utils.admin.admin_site import admin_site
+from lemarche.utils.apis import api_brevo
 from lemarche.utils.fields import ChoiceArrayField, pretty_print_readonly_jsonfield
 from lemarche.www.tenders.tasks import restart_send_tender_task
 
@@ -765,6 +767,11 @@ def response_change(self, request, obj: Tender):
             return HttpResponseRedirect("./#structures")  # redirect to structures sections
         if request.POST.get("_validate_tender"):
             obj.set_validated()
+            if obj.amount_int > settings.BREVO_TENDERS_MIN_AMOUNT_TO_SEND:
+                api_brevo.create_deal(tender=obj, owner_email=request.user.email)
+                # we link deal(tender) with author contact
+                api_brevo.link_deal_with_list_contact(tender=obj)
+                self.message_user(request, "Ce dépôt de besoin a été synchronisé avec Brevo")
             self.message_user(request, "Ce dépôt de besoin a été validé. Il sera envoyé en temps voulu :)")
             return HttpResponseRedirect(".")
         elif request.POST.get("_restart_tender"):
diff --git a/lemarche/tenders/models.py b/lemarche/tenders/models.py
index 7bac03ef9..d3992a95e 100644
--- a/lemarche/tenders/models.py
+++ b/lemarche/tenders/models.py
@@ -981,6 +981,16 @@ def is_validated_or_sent(self) -> bool:
     def is_partner_approch(self) -> bool:
         return self.author_id == settings.PARTNER_APPROCH_USER_ID
 
+    @property
+    def amount_int(self) -> int:
+        if self.amount_exact:
+            return self.amount_exact
+        elif self.amount:
+            return tender_constants.AMOUNT_RANGE_CHOICE_EXACT.get(self.amount)
+        else:
+            # else return -1 for unknown
+            return -1
+
     def set_validated(self):
         self.validated_at = timezone.now()
         self.status = tender_constants.STATUS_VALIDATED