diff --git a/backend/alembic.ini b/backend/alembic.ini
new file mode 100644
index 0000000..18c99e2
--- /dev/null
+++ b/backend/alembic.ini
@@ -0,0 +1,149 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts.
+# this is typically a path given in POSIX (e.g. forward slashes)
+# format, relative to the token %(here)s which refers to the location of this
+# ini file
+script_location = %(here)s/alembic
+
+# template used to generate migration file names; The default value is %%(rev)s_%%(slug)s
+# Uncomment the line below if you want the files to be prepended with date and time
+# see https://alembic.sqlalchemy.org/en/latest/tutorial.html#editing-the-ini-file
+# for all available tokens
+# file_template = %%(year)d_%%(month).2d_%%(day).2d_%%(hour).2d%%(minute).2d-%%(rev)s_%%(slug)s
+# Or organize into date-based subdirectories (requires recursive_version_locations = true)
+# file_template = %%(year)d/%%(month).2d/%%(day).2d_%%(hour).2d%%(minute).2d_%%(second).2d_%%(rev)s_%%(slug)s
+
+# sys.path path, will be prepended to sys.path if present.
+# defaults to the current working directory.  for multiple paths, the path separator
+# is defined by "path_separator" below.
+prepend_sys_path = .
+
+
+# timezone to use when rendering the date within the migration file
+# as well as the filename.
+# If specified, requires the tzdata library which can be installed by adding
+# `alembic[tz]` to the pip requirements.
+# string value is passed to ZoneInfo()
+# leave blank for localtime
+# timezone =
+
+# max length of characters to apply to the "slug" field
+# truncate_slug_length = 40
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+# set to 'true' to allow .pyc and .pyo files without
+# a source .py file to be detected as revisions in the
+# versions/ directory
+# sourceless = false
+
+# version location specification; This defaults
+# to <script_location>/versions.  When using multiple version
+# directories, initial revisions must be specified with --version-path.
+# The path separator used here should be the separator specified by "path_separator"
+# below.
+# version_locations = %(here)s/bar:%(here)s/bat:%(here)s/alembic/versions
+
+# path_separator; This indicates what character is used to split lists of file
+# paths, including version_locations and prepend_sys_path within configparser
+# files such as alembic.ini.
+# The default rendered in new alembic.ini files is "os", which uses os.pathsep
+# to provide os-dependent path splitting.
+#
+# Note that in order to support legacy alembic.ini files, this default does NOT
+# take place if path_separator is not present in alembic.ini.  If this
+# option is omitted entirely, fallback logic is as follows:
+#
+# 1. Parsing of the version_locations option falls back to using the legacy
+#    "version_path_separator" key, which if absent then falls back to the legacy
+#    behavior of splitting on spaces and/or commas.
+# 2. Parsing of the prepend_sys_path option falls back to the legacy
+#    behavior of splitting on spaces, commas, or colons.
+#
+# Valid values for path_separator are:
+#
+# path_separator = :
+# path_separator = ;
+# path_separator = space
+# path_separator = newline
+#
+# Use os.pathsep. Default configuration used for new projects.
+path_separator = os
+
+# set to 'true' to search source files recursively
+# in each "version_locations" directory
+# new in Alembic version 1.10
+# recursive_version_locations = false
+
+# the output encoding used when revision files
+# are written from script.py.mako
+# output_encoding = utf-8
+
+# database URL.  This is consumed by the user-maintained env.py script only.
+# other means of configuring database URLs may be customized within the env.py
+# file.
+sqlalchemy.url = sqlite:///./dmarq.db
+
+
+[post_write_hooks]
+# post_write_hooks defines scripts or Python functions that are run
+# on newly generated revision scripts.  See the documentation for further
+# detail and examples
+
+# format using "black" - use the console_scripts runner, against the "black" entrypoint
+# hooks = black
+# black.type = console_scripts
+# black.entrypoint = black
+# black.options = -l 79 REVISION_SCRIPT_FILENAME
+
+# lint with attempts to fix using "ruff" - use the module runner, against the "ruff" module
+# hooks = ruff
+# ruff.type = module
+# ruff.module = ruff
+# ruff.options = check --fix REVISION_SCRIPT_FILENAME
+
+# Alternatively, use the exec runner to execute a binary found on your PATH
+# hooks = ruff
+# ruff.type = exec
+# ruff.executable = ruff
+# ruff.options = check --fix REVISION_SCRIPT_FILENAME
+
+# Logging configuration.  This is also consumed by the user-maintained
+# env.py script only.
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARNING
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARNING
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S
diff --git a/backend/alembic/README b/backend/alembic/README
new file mode 100644
index 0000000..98e4f9c
--- /dev/null
+++ b/backend/alembic/README
@@ -0,0 +1 @@
+Generic single-database configuration.
\ No newline at end of file
diff --git a/backend/alembic/env.py b/backend/alembic/env.py
new file mode 100644
index 0000000..918a1d7
--- /dev/null
+++ b/backend/alembic/env.py
@@ -0,0 +1,82 @@
+import os
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# Override sqlalchemy.url with DATABASE_URL environment variable when present
+database_url = os.environ.get("DATABASE_URL")
+if database_url:
+    config.set_main_option("sqlalchemy.url", database_url)
+
+# Import all models so that autogenerate can detect them
+from app.core.database import Base  # noqa: E402
+import app.models.domain  # noqa: E402, F401
+import app.models.report  # noqa: E402, F401
+import app.models.user  # noqa: E402, F401
+
+target_metadata = Base.metadata
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()
diff --git a/backend/alembic/script.py.mako b/backend/alembic/script.py.mako
new file mode 100644
index 0000000..1101630
--- /dev/null
+++ b/backend/alembic/script.py.mako
@@ -0,0 +1,28 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, Sequence[str], None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    ${downgrades if downgrades else "pass"}
diff --git a/backend/alembic/versions/88b549786e2d_initial_schema.py b/backend/alembic/versions/88b549786e2d_initial_schema.py
new file mode 100644
index 0000000..970975c
--- /dev/null
+++ b/backend/alembic/versions/88b549786e2d_initial_schema.py
@@ -0,0 +1,159 @@
+"""initial schema
+
+Revision ID: 88b549786e2d
+Revises: 
+Create Date: 2026-03-29 11:36:11.612752
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '88b549786e2d'
+down_revision: Union[str, Sequence[str], None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('domains',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('name', sa.String(), nullable=False),
+    sa.Column('description', sa.Text(), nullable=True),
+    sa.Column('active', sa.Boolean(), nullable=True),
+    sa.Column('dmarc_policy', sa.String(), nullable=True),
+    sa.Column('spf_record', sa.String(), nullable=True),
+    sa.Column('dkim_selectors', sa.String(), nullable=True),
+    sa.Column('verified', sa.Boolean(), nullable=True),
+    sa.Column('verification_token', sa.String(), nullable=True),
+    sa.Column('created_at', sa.DateTime(), nullable=True),
+    sa.Column('updated_at', sa.DateTime(), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_domains_active'), 'domains', ['active'], unique=False)
+    op.create_index('ix_domains_active_verified', 'domains', ['active', 'verified'], unique=False)
+    op.create_index(op.f('ix_domains_created_at'), 'domains', ['created_at'], unique=False)
+    op.create_index(op.f('ix_domains_id'), 'domains', ['id'], unique=False)
+    op.create_index(op.f('ix_domains_name'), 'domains', ['name'], unique=True)
+    op.create_index('ix_domains_policy', 'domains', ['dmarc_policy'], unique=False)
+    op.create_index('ix_domains_updated', 'domains', ['updated_at'], unique=False)
+    op.create_index(op.f('ix_domains_verified'), 'domains', ['verified'], unique=False)
+    op.create_table('users',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('email', sa.String(), nullable=False),
+    sa.Column('hashed_password', sa.String(), nullable=False),
+    sa.Column('is_active', sa.Boolean(), nullable=True),
+    sa.Column('is_superuser', sa.Boolean(), nullable=True),
+    sa.Column('is_verified', sa.Boolean(), nullable=True),
+    sa.Column('full_name', sa.String(), nullable=True),
+    sa.Column('organization', sa.String(), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_users_email'), 'users', ['email'], unique=True)
+    op.create_index(op.f('ix_users_id'), 'users', ['id'], unique=False)
+    op.create_table('dmarc_reports',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('domain_id', sa.Integer(), nullable=False),
+    sa.Column('report_id', sa.String(), nullable=False),
+    sa.Column('org_name', sa.String(), nullable=False),
+    sa.Column('begin_date', sa.Integer(), nullable=False),
+    sa.Column('end_date', sa.Integer(), nullable=False),
+    sa.Column('source_email', sa.String(), nullable=True),
+    sa.Column('policy', sa.String(), nullable=True),
+    sa.Column('subdomain_policy', sa.String(), nullable=True),
+    sa.Column('adkim', sa.String(length=1), nullable=True),
+    sa.Column('aspf', sa.String(length=1), nullable=True),
+    sa.Column('percentage', sa.Integer(), nullable=True),
+    sa.Column('processed_at', sa.DateTime(), nullable=True),
+    sa.Column('raw_data', sa.Text(), nullable=True),
+    sa.ForeignKeyConstraint(['domain_id'], ['domains.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_dmarc_reports_begin_date'), 'dmarc_reports', ['begin_date'], unique=False)
+    op.create_index('ix_dmarc_reports_domain_dates', 'dmarc_reports', ['domain_id', 'begin_date', 'end_date'], unique=False)
+    op.create_index(op.f('ix_dmarc_reports_domain_id'), 'dmarc_reports', ['domain_id'], unique=False)
+    op.create_index(op.f('ix_dmarc_reports_end_date'), 'dmarc_reports', ['end_date'], unique=False)
+    op.create_index(op.f('ix_dmarc_reports_id'), 'dmarc_reports', ['id'], unique=False)
+    op.create_index(op.f('ix_dmarc_reports_org_name'), 'dmarc_reports', ['org_name'], unique=False)
+    op.create_index('ix_dmarc_reports_policy', 'dmarc_reports', ['policy'], unique=False)
+    op.create_index('ix_dmarc_reports_processed', 'dmarc_reports', ['processed_at'], unique=False)
+    op.create_index(op.f('ix_dmarc_reports_report_id'), 'dmarc_reports', ['report_id'], unique=False)
+    op.create_table('user_domains',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('user_id', sa.Integer(), nullable=False),
+    sa.Column('domain_id', sa.Integer(), nullable=False),
+    sa.Column('role', sa.String(), nullable=False),
+    sa.Column('created_at', sa.DateTime(), nullable=True),
+    sa.ForeignKeyConstraint(['domain_id'], ['domains.id'], ),
+    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_user_domains_id'), 'user_domains', ['id'], unique=False)
+    op.create_table('report_records',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('report_id', sa.Integer(), nullable=False),
+    sa.Column('source_ip', sa.String(), nullable=False),
+    sa.Column('count', sa.Integer(), nullable=False),
+    sa.Column('disposition', sa.String(), nullable=False),
+    sa.Column('dkim', sa.String(), nullable=True),
+    sa.Column('spf', sa.String(), nullable=True),
+    sa.Column('header_from', sa.String(), nullable=True),
+    sa.Column('envelope_from', sa.String(), nullable=True),
+    sa.Column('dkim_auth_details', sa.Text(), nullable=True),
+    sa.Column('spf_auth_details', sa.Text(), nullable=True),
+    sa.ForeignKeyConstraint(['report_id'], ['dmarc_reports.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index('ix_report_records_disposition', 'report_records', ['disposition', 'count'], unique=False)
+    op.create_index(op.f('ix_report_records_dkim'), 'report_records', ['dkim'], unique=False)
+    op.create_index(op.f('ix_report_records_header_from'), 'report_records', ['header_from'], unique=False)
+    op.create_index(op.f('ix_report_records_id'), 'report_records', ['id'], unique=False)
+    op.create_index(op.f('ix_report_records_report_id'), 'report_records', ['report_id'], unique=False)
+    op.create_index('ix_report_records_source_auth', 'report_records', ['source_ip', 'dkim', 'spf'], unique=False)
+    op.create_index(op.f('ix_report_records_source_ip'), 'report_records', ['source_ip'], unique=False)
+    op.create_index(op.f('ix_report_records_spf'), 'report_records', ['spf'], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f('ix_report_records_spf'), table_name='report_records')
+    op.drop_index(op.f('ix_report_records_source_ip'), table_name='report_records')
+    op.drop_index('ix_report_records_source_auth', table_name='report_records')
+    op.drop_index(op.f('ix_report_records_report_id'), table_name='report_records')
+    op.drop_index(op.f('ix_report_records_id'), table_name='report_records')
+    op.drop_index(op.f('ix_report_records_header_from'), table_name='report_records')
+    op.drop_index(op.f('ix_report_records_dkim'), table_name='report_records')
+    op.drop_index('ix_report_records_disposition', table_name='report_records')
+    op.drop_table('report_records')
+    op.drop_index(op.f('ix_user_domains_id'), table_name='user_domains')
+    op.drop_table('user_domains')
+    op.drop_index(op.f('ix_dmarc_reports_report_id'), table_name='dmarc_reports')
+    op.drop_index('ix_dmarc_reports_processed', table_name='dmarc_reports')
+    op.drop_index('ix_dmarc_reports_policy', table_name='dmarc_reports')
+    op.drop_index(op.f('ix_dmarc_reports_org_name'), table_name='dmarc_reports')
+    op.drop_index(op.f('ix_dmarc_reports_id'), table_name='dmarc_reports')
+    op.drop_index(op.f('ix_dmarc_reports_end_date'), table_name='dmarc_reports')
+    op.drop_index(op.f('ix_dmarc_reports_domain_id'), table_name='dmarc_reports')
+    op.drop_index('ix_dmarc_reports_domain_dates', table_name='dmarc_reports')
+    op.drop_index(op.f('ix_dmarc_reports_begin_date'), table_name='dmarc_reports')
+    op.drop_table('dmarc_reports')
+    op.drop_index(op.f('ix_users_id'), table_name='users')
+    op.drop_index(op.f('ix_users_email'), table_name='users')
+    op.drop_table('users')
+    op.drop_index(op.f('ix_domains_verified'), table_name='domains')
+    op.drop_index('ix_domains_updated', table_name='domains')
+    op.drop_index('ix_domains_policy', table_name='domains')
+    op.drop_index(op.f('ix_domains_name'), table_name='domains')
+    op.drop_index(op.f('ix_domains_id'), table_name='domains')
+    op.drop_index(op.f('ix_domains_created_at'), table_name='domains')
+    op.drop_index('ix_domains_active_verified', table_name='domains')
+    op.drop_index(op.f('ix_domains_active'), table_name='domains')
+    op.drop_table('domains')
+    # ### end Alembic commands ###
diff --git a/backend/app/models/domain.py b/backend/app/models/domain.py
index 9c61c91..448d373 100644
--- a/backend/app/models/domain.py
+++ b/backend/app/models/domain.py
@@ -17,7 +17,7 @@ class Domain(Base):
     active = Column(Boolean, default=True, index=True)
 
     # DMARC policy information
-    dmarc_policy = Column(String, nullable=True, index=True)
+    dmarc_policy = Column(String, nullable=True)
     spf_record = Column(String, nullable=True)
     dkim_selectors = Column(String, nullable=True)  # Comma-separated list of DKIM selectors
 
diff --git a/backend/app/models/report.py b/backend/app/models/report.py
index 3099054..e8df9ac 100644
--- a/backend/app/models/report.py
+++ b/backend/app/models/report.py
@@ -29,7 +29,7 @@ class DMARCReport(Base):
     percentage = Column(Integer, nullable=True)
 
     # Processing metadata
-    processed_at = Column(DateTime, default=datetime.utcnow, index=True)
+    processed_at = Column(DateTime, default=datetime.utcnow)
     raw_data = Column(Text, nullable=True)  # Original XML content (optional)
 
     # Relationships