diff --git a/app/models.py b/app/models.py
index 0760eb750..b099e14c5 100644
--- a/app/models.py
+++ b/app/models.py
@@ -361,6 +361,9 @@ class Service(db.Model, Versioned):
     crown = db.Column(db.Boolean, index=False, nullable=False, default=True)
     rate_limit = db.Column(db.Integer, index=False, nullable=False, default=3000)
     contact_link = db.Column(db.String(255), nullable=True, unique=False)
+    volume_sms = db.Column(db.String(255), nullable=True, unique=False)
+    volume_email = db.Column(db.String(255), nullable=True, unique=False)
+    volume_letter = db.Column(db.String(255), nullable=True, unique=False)
 
     organisation = db.relationship(
         'Organisation',
diff --git a/migrations/versions/0260_service_volumes.py b/migrations/versions/0260_service_volumes.py
new file mode 100644
index 000000000..ad5d43035
--- /dev/null
+++ b/migrations/versions/0260_service_volumes.py
@@ -0,0 +1,30 @@
+"""
+
+Revision ID: 0260_service_volumes
+Revises: 0259_remove_service_postage
+Create Date: 2019-02-13 13:45:00.782500
+
+"""
+from alembic import op
+from itertools import product
+import sqlalchemy as sa
+
+
+revision = '0260_service_volumes'
+down_revision = '0259_remove_service_postage'
+
+
+TABLES_AND_CHANNELS = product(
+    ('services', 'services_history'),
+    ('volume_{}'.format(channel) for channel in ('email', 'letter', 'sms')),
+)
+
+
+def upgrade():
+    for table, channel in TABLES_AND_CHANNELS:
+        op.add_column(table, sa.Column(channel, sa.String(length=255), nullable=True))
+
+
+def downgrade():
+    for table, channel in TABLES_AND_CHANNELS:
+        op.drop_column(table, channel)
diff --git a/tests/app/service/test_rest.py b/tests/app/service/test_rest.py
index c8aaee67f..8220fc8f7 100644
--- a/tests/app/service/test_rest.py
+++ b/tests/app/service/test_rest.py
@@ -615,6 +615,32 @@ def test_update_service_sets_crown(client, sample_service, org_type, expected):
     assert result['data']['crown'] is expected
 
 
+@pytest.mark.parametrize('field', (
+    'volume_email',
+    'volume_sms',
+    'volume_letter',
+))
+@pytest.mark.parametrize('value', (
+    'ABC123',
+    None,
+))
+def test_update_service_sets_volumes(
+    admin_request,
+    sample_service,
+    field,
+    value,
+):
+    admin_request.post(
+        'service.update_service',
+        service_id=sample_service.id,
+        _data={
+            field: value,
+        },
+        _expected_status=200,
+    )
+    assert getattr(sample_service, field) == value
+
+
 @pytest.fixture(scope='function')
 def service_with_no_permissions(notify_db, notify_db_session):
     return create_service(service_permissions=[])