diff --git a/broker_sync/providers/imap.py b/broker_sync/providers/imap.py
index e935bab..5564dd3 100644
--- a/broker_sync/providers/imap.py
+++ b/broker_sync/providers/imap.py
@@ -16,6 +16,7 @@ from __future__ import annotations
 import email
 import imaplib
 import logging
+import os
 import re
 import ssl
 from collections.abc import AsyncIterator, Iterator
@@ -152,7 +153,12 @@ def _fetch_all(creds: ImapCreds) -> Iterator[bytes]:
 
 def fetch_activities(creds: ImapCreds) -> list[Activity]:
     out: list[Activity] = []
-    ie_parsed = schwab_parsed = skipped = 0
+    ie_parsed = schwab_parsed = ie_skipped = skipped = 0
+    exclude = {
+        p.strip().lower()
+        for p in os.environ.get("BROKER_SYNC_IMAP_EXCLUDE_PROVIDERS", "").split(",")
+        if p.strip()
+    }
     for raw in _fetch_all(creds):
         try:
             msg = email.message_from_bytes(raw)
@@ -161,17 +167,28 @@ def fetch_activities(creds: ImapCreds) -> list[Activity]:
             continue
         sender = _extract_sender(msg)
         if sender in _IE_SENDERS or sender.endswith("@investengine.com"):
+            if "invest-engine" in exclude or "invest_engine" in exclude:
+                ie_skipped += 1
+                continue
             out.extend(ie_parser.parse_invest_engine_email(raw))
             ie_parsed += 1
-        elif sender in _SCHWAB_SENDERS or sender.endswith("@schwab.com"):
+        elif (
+            sender in _SCHWAB_SENDERS
+            or sender.endswith("@schwab.com")
+            or sender.endswith(".schwab.com")  # e.g. donotreply@mail.schwab.com
+        ):
+            if "schwab" in exclude:
+                skipped += 1
+                continue
             html = _html_or_text(msg)
             out.extend(parse_schwab_email(html))
             schwab_parsed += 1
         else:
             skipped += 1
     log.info(
-        "imap: ie_parsed=%d schwab_parsed=%d skipped=%d → %d activities",
+        "imap: ie_parsed=%d ie_skipped=%d schwab_parsed=%d skipped=%d → %d activities",
         ie_parsed,
+        ie_skipped,
         schwab_parsed,
         skipped,
         len(out),
diff --git a/tests/providers/test_fidelity_planviewer.py b/tests/providers/test_fidelity_planviewer.py
index acfccbc..19c389a 100644
--- a/tests/providers/test_fidelity_planviewer.py
+++ b/tests/providers/test_fidelity_planviewer.py
@@ -17,6 +17,7 @@ from broker_sync.providers.fidelity_planviewer import (
     gains_offset_delta_activity,
 )
 from broker_sync.providers.parsers.fidelity import (
+    FidelityHolding,
     parse_transactions_html,
     parse_valuation_json,
 )
@@ -152,8 +153,7 @@ def test_provider_caches_holdings_for_cli_snapshot_push() -> None:
 # -- delta-shaped gains offset (the monthly accumulation mechanism) --
 
 
-def _holdings_summing_to(total: Decimal) -> list:
-    from broker_sync.providers.parsers.fidelity import FidelityHolding
+def _holdings_summing_to(total: Decimal) -> list[FidelityHolding]:
     return [FidelityHolding(
         fund_code="KDOA", fund_name="Test", units=Decimal("100"),
         unit_price=total / Decimal("100"), currency="GBP", total_value=total,
diff --git a/tests/providers/test_imap.py b/tests/providers/test_imap.py
index 63638cb..1abe587 100644
--- a/tests/providers/test_imap.py
+++ b/tests/providers/test_imap.py
@@ -99,3 +99,54 @@ def test_non_ie_activities_passed_through_unchanged() -> None:
     routed = _split_ie_by_isa_cap([schwab_act])
     assert routed[0].account_id == "schwab-workplace"
     assert routed[0].account_type is AccountType.GIA
+
+
+def test_exclude_invest_engine_skips_ie_emails(monkeypatch) -> None:
+    """BROKER_SYNC_IMAP_EXCLUDE_PROVIDERS=invest-engine should skip IE messages
+    so we don't duplicate IE buys already ingested via the bearer-token API path.
+    Schwab routing must remain unaffected."""
+    from broker_sync.providers import imap as imap_mod
+
+    ie_email = (
+        b"From: noreply@investengine.com\r\n"
+        b"Subject: VUAG Bought\r\n"
+        b"Content-Type: text/plain\r\n\r\n"
+        b"Vanguard S&P 500: VUAG Bought 10.0 @ 100.0 per share Total: 1000.00\r\n"
+    )
+    schwab_email = (
+        b"From: donotreply@schwab.com\r\n"
+        b"Subject: Order Confirmed\r\n"
+        b"Content-Type: text/html\r\n\r\n"
+        b"<html><body>no-op</body></html>\r\n"
+    )
+    monkeypatch.setattr(imap_mod, "_fetch_all", lambda _: [ie_email, schwab_email])
+    monkeypatch.setattr(imap_mod.ie_parser, "parse_invest_engine_email",
+                        lambda raw: [object()])
+    monkeypatch.setattr(imap_mod, "parse_schwab_email", lambda html: [object()])
+
+    creds = imap_mod.ImapCreds(host="h", user="u", password="p", directory="d")
+
+    monkeypatch.setenv("BROKER_SYNC_IMAP_EXCLUDE_PROVIDERS", "invest-engine")
+    out_excluded = imap_mod.fetch_activities(creds)
+    # IE skipped → only the schwab activity is emitted
+    assert len(out_excluded) == 1
+
+    monkeypatch.delenv("BROKER_SYNC_IMAP_EXCLUDE_PROVIDERS", raising=False)
+    out_default = imap_mod.fetch_activities(creds)
+    # Both providers fire when env unset
+    assert len(out_default) == 2
+
+
+def test_schwab_subdomain_sender_matches() -> None:
+    """Real Schwab trade emails come from `donotreply@mail.schwab.com`
+    (subdomain), not just `donotreply@schwab.com`. The matcher must
+    accept either form."""
+    from broker_sync.providers.imap import _SCHWAB_SENDERS
+    # Verify the static set works
+    assert "donotreply@schwab.com" in _SCHWAB_SENDERS
+    # Verify the subdomain suffix check
+    for addr in (
+        "donotreply@mail.schwab.com",
+        "wealthnotify@equityawards.schwab.com",
+    ):
+        assert addr.endswith(".schwab.com"), addr