add User.can_use_multiple_mailbox column

app/models.py

@@ -133,6 +133,10 @@ class User(db.Model, ModelMixin, UserMixin):
         ArrowType, default=lambda: arrow.now().shift(days=7, hours=1), nullable=True
     )
 
+    can_use_multiple_mailbox = db.Column(
+        db.Boolean, default=False, nullable=False, server_default="0"
+    )
+
     profile_picture = db.relationship(File)
 
     @classmethod

migrations/versions/2020_021122_3c9542fc54e9_.py

@@ -0,0 +1,29 @@
+"""empty message
+
+Revision ID: 3c9542fc54e9
+Revises: 6664d75ce3d4
+Create Date: 2020-02-11 22:28:58.017384
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '3c9542fc54e9'
+down_revision = '6664d75ce3d4'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('users', sa.Column('can_use_multiple_mailbox', sa.Boolean(), server_default='0', nullable=False))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('users', 'can_use_multiple_mailbox')
+    # ### end Alembic commands ###