diff --git a/config/settings/base.py b/config/settings/base.py
index 0d43659c9..84d6f77e2 100644
--- a/config/settings/base.py
+++ b/config/settings/base.py
@@ -364,9 +364,10 @@
 )
 
 
-# -- Sendinblue (BREVO)
+# -- Sendinblue (Brevo)
 BREVO_API_KEY = env.str("BREVO_API_KEY", "set-it")
 BREVO_CL_SIGNUP_BUYER_ID = env.int("BREVO_CL_SIGNUP_BUYER_ID", 10)
+BREVO_CL_SIGNUP_SIAE_ID = env.int("BREVO_CL_SIGNUP_SIAE_ID", 27)
 BREVO_CL_BUYER_SEARCH_SIAE_LIST_ID = env.int("BREVO_CL_BUYER_SEARCH_SIAE_LIST_ID", 12)
 
 INBOUND_PARSING_DOMAIN_EMAIL = env.str("INBOUND_PARSING_DOMAIN_EMAIL", "reply.staging.lemarche.inclusion.beta.gouv.fr")
diff --git a/lemarche/utils/emails.py b/lemarche/utils/emails.py
index f0f6c6dec..f68972011 100644
--- a/lemarche/utils/emails.py
+++ b/lemarche/utils/emails.py
@@ -67,6 +67,8 @@ def add_to_contact_list(user, type: str, source: str = user_constants.SOURCE_SIG
             # TODO: we still use it ?
             api_hubspot.add_user_to_crm(user)
             api_brevo.create_contact(user=user, list_id=settings.BREVO_CL_SIGNUP_BUYER_ID)
+        elif user.kind == user.KIND_SIAE:
+            api_brevo.create_contact(user=user, list_id=settings.BREVO_CL_SIGNUP_SIAE_ID)
     elif type == "buyer_search":
         # contact_list_id = settings.MAILJET_NL_CL_BUYER_SEARCH_SIAE_LIST_ID
         api_brevo.create_contact(user=user, list_id=settings.BREVO_CL_BUYER_SEARCH_SIAE_LIST_ID)