Make users and aliases email case insensitive

admin/mailu/models.py

@@ -149,7 +149,7 @@ class Email(object):
             context.current_parameters["localpart"],
             context.current_parameters["domain_name"],
         )
-        return db.Column(db.String(255),
+        return db.Column(db.String(255, collation="NOCASE"),
             primary_key=True, nullable=False,
             default=updater)
 

admin/migrations/versions/9c28df23f77e_.py

@@ -0,0 +1,28 @@
+""" Set the nocase collation on the user and alias tables
+
+Revision ID: 9c28df23f77e
+Revises: c162ac88012a
+Create Date: 2017-10-29 13:28:29.155754
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '9c28df23f77e'
+down_revision = 'c162ac88012a'
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    with op.batch_alter_table('user') as batch:
+        batch.alter_column('email', type_=sa.String(length=255, collation="NOCASE"))
+    with op.batch_alter_table('alias') as batch:
+        batch.alter_column('email', type_=sa.String(length=255, collation="NOCASE"))
+
+
+def downgrade():
+    with op.batch_alter_table('user') as batch:
+        batch.alter_column('email', type_=sa.String(length=255))
+    with op.batch_alter_table('alias') as batch:
+        batch.alter_column('email', type_=sa.String(length=255))