diff --git a/sefaria/helper/crm/crm_mediator.py b/sefaria/helper/crm/crm_mediator.py
index 87980f1175..d07d1619d7 100644
--- a/sefaria/helper/crm/crm_mediator.py
+++ b/sefaria/helper/crm/crm_mediator.py
@@ -20,8 +20,8 @@ def create_crm_user(self, email, first_name, last_name, lang="en", educator=Fals
         except:
             return False
 
-    def subscribe_to_lists(self, email, first_name, last_name, educator=False, lang="en"):
-        return self._crm_connection.subscribe_to_lists(email, first_name, last_name, educator, lang)
+    def subscribe_to_lists(self, email, first_name, last_name, educator=False, lang="en", mailing_lists=None):
+        return self._crm_connection.subscribe_to_lists(email, first_name, last_name, educator, lang, mailing_lists)
 
     def sync_sustainers(self):
         current_sustainers = CrmInfoStore.get_current_sustainers()
@@ -71,3 +71,6 @@ def get_and_save_crm_id(self, email=None):
             CrmInfoStore.save_crm_id(crm_id, email)
         else:
             return False
+
+    def get_available_lists(self):
+        return self._crm_connection.get_available_lists()
diff --git a/sefaria/helper/crm/salesforce.py b/sefaria/helper/crm/salesforce.py
index 8f850d803f..8f040993f3 100644
--- a/sefaria/helper/crm/salesforce.py
+++ b/sefaria/helper/crm/salesforce.py
@@ -6,6 +6,11 @@
 from sefaria.helper.crm.crm_connection_manager import CrmConnectionManager
 from sefaria import settings as sls
 
+from typing import Any, Optional
+
+class SalesforceNewsletterListRetrievalError(Exception):
+    pass
+
 class SalesforceConnectionManager(CrmConnectionManager):
     def __init__(self):
         CrmConnectionManager.__init__(self, sls.SALESFORCE_BASE_URL)
@@ -25,7 +30,7 @@ def make_request(self, request, **kwargs):
 
     def get(self, endpoint):
         headers = {'Content-type': 'application/json', 'Accept': 'application/json'}
-        return self.session.get(endpoint, headers)
+        return self.session.get(endpoint, headers=headers)
 
     def post(self, endpoint, **kwargs):
         headers = {'Content-type': 'application/json', 'Accept': 'application/json'}
@@ -120,8 +125,17 @@ def find_crm_id(self, email=None):
         except:
             return False
 
-    def subscribe_to_lists(self, email, first_name=None, last_name=None, lang="en", educator=False):
-        # TODO: Implement once endpoint exists
+    def subscribe_to_lists(
+        self, 
+        email: str, 
+        first_name: Optional[str] = None, 
+        last_name: Optional[str] = None, 
+        lang: str = "en", 
+        educator: bool = False,
+        mailing_lists: Optional[list[str]] = None) -> Any:
+
+        mailing_lists = mailing_lists or []
+
         CrmConnectionManager.subscribe_to_lists(self, email, first_name, last_name, lang, educator)
         if lang == "he":
             language = "Hebrew"
@@ -134,7 +148,8 @@ def subscribe_to_lists(self, email, first_name=None, last_name=None, lang="en",
                       "Last_Name__c": last_name,
                       "Sefaria_App_Email__c": email,
                       "Hebrew_English__c": language,
-                      "Educator__c": educator
+                      "Educator__c": educator,
+                      "Newsletter_Names__c": mailing_lists
                   })
         res = self.post(self.create_endpoint("Sefaria_App_Data__c"),
                         json={
@@ -145,3 +160,13 @@ def subscribe_to_lists(self, email, first_name=None, last_name=None, lang="en",
         except:
             return False
         return res
+
+    def get_available_lists(self) -> list[str]:
+        try:
+            resource_prefix = f"services/data/v{self.version}/query"
+            endpoint = f"{sls.SALESFORCE_BASE_URL}/{resource_prefix}/"
+            response = self.get(endpoint + "?q=SELECT+Subscriptions__c+FROM+AC_to_SF_List_Mapping__mdt")
+            records = response.json()["records"]
+            return [record["Subscriptions__c"] for record in records]
+        except (requests.RequestException, KeyError, json.JSONDecodeError, AttributeError):
+            raise SalesforceNewsletterListRetrievalError("Unable to retrieve newsletter mailing lists from Salesforce CRM")
diff --git a/sefaria/urls.py b/sefaria/urls.py
index e03302f937..1e357159f7 100644
--- a/sefaria/urls.py
+++ b/sefaria/urls.py
@@ -398,10 +398,11 @@
     url(r'^api/send_feedback$', sefaria_views.generate_feedback),
 ]
 
-# Email Subscribe
+# Email Newsletter Subscriptions
 urlpatterns += [
     url(r'^api/subscribe/(?P<org>.+)/(?P<email>.+)$', sefaria_views.generic_subscribe_to_newsletter_api),
     url(r'^api/subscribe/(?P<email>.+)$', sefaria_views.subscribe_sefaria_newsletter_view),
+    url(r'^api/newsletter_mailing_lists/?$', sefaria_views.get_available_newsletter_mailing_lists),
 ]
 
 # Admin
diff --git a/sefaria/views.py b/sefaria/views.py
index 71bf51d404..c7c3ba3d92 100644
--- a/sefaria/views.py
+++ b/sefaria/views.py
@@ -36,6 +36,7 @@
 import sefaria.model as model
 import sefaria.system.cache as scache
 from sefaria.helper.crm.crm_mediator import CrmMediator
+from sefaria.helper.crm.salesforce import SalesforceNewsletterListRetrievalError
 from sefaria.system.cache import in_memory_cache
 from sefaria.client.util import jsonResponse, send_email, read_webpack_bundle
 from sefaria.forms import SefariaNewUserForm, SefariaNewUserFormAPI, SefariaDeleteUserForm, SefariaDeleteSheet
@@ -204,16 +205,27 @@ def subscribe_sefaria_newsletter_view(request, email):
 
 def subscribe_sefaria_newsletter(request, email, first_name, last_name):
     """
-    API for subscribing to mailing lists, in `lists` url param.
-    Currently active lists are:
-    "Announcements_General", "Announcements_General_Hebrew", "Announcements_Edu", "Announcements_Edu_Hebrew"
+    API for subscribing to mailing lists
+    * By default, the user's email address is subscribed to the default lists: "Master," "General Updates" (or the one for Hebrew), and "Educator Updates" (if the user is an educator).
+    * If the user's email address already exists, the email address to those lists is not resubscribed to those lists
+    * When you provide additional newsletter mailing lists, the email address will be subscribed to those lists, along with the default ones, if the email address does not already exist.
+    * However, if we pass the email address with any of those default newsletter lists as additional ones, Salesforce will resubscribe the email address to those lists.
     """
     body = json.loads(request.body)
     language = body.get("language", "")
     educator = body.get("educator", False)
+    mailing_lists = body.get("lists", [])
     crm_mediator = CrmMediator()
-    return crm_mediator.subscribe_to_lists(email, first_name, last_name, educator=educator, lang=language)
+    return crm_mediator.subscribe_to_lists(email, first_name, last_name, educator=educator, lang=language, mailing_lists=mailing_lists)
 
+@csrf_exempt
+def get_available_newsletter_mailing_lists(request):
+    try:
+        return jsonResponse({"newsletter_mailing_lists": CrmMediator().get_available_lists()})
+    except SalesforceNewsletterListRetrievalError as e:
+        return jsonResponse({"error": str(e)}, status=502)
+    except:
+        return jsonResponse({"error": "Unknown error occurred"}, status=500)
 
 def subscribe_steinsaltz(request, email, first_name, last_name):
     """