Add Mailbox.generic_subject column

app/models.py

@@ -1642,6 +1642,8 @@ class Mailbox(db.Model, ModelMixin):
     # a mailbox can be disabled if it can't be reached
     disabled = db.Column(db.Boolean, default=False, nullable=False, server_default="0")
 
+    generic_subject = db.Column(db.String(78), nullable=True)
+
     __table_args__ = (db.UniqueConstraint("user_id", "email", name="uq_mailbox_user"),)
 
     user = db.relationship(User, foreign_keys=[user_id])

migrations/versions/2020_110712_d0f197979bd9_.py

@@ -0,0 +1,29 @@
+"""empty message
+
+Revision ID: d0f197979bd9
+Revises: 84dec6c29c48
+Create Date: 2020-11-07 12:47:44.131900
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'd0f197979bd9'
+down_revision = '84dec6c29c48'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('mailbox', sa.Column('generic_subject', sa.String(length=78), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('mailbox', 'generic_subject')
+    # ### end Alembic commands ###