Add mark_as_read config option to preserve email read status

Emails forwarded to Poke are no longer marked as read by default,
so users can continue using read/unread status to organize their
inbox. Set mark_as_read: true (global or per-account) to restore
the previous behavior.

Closes #5

config.example.yml

@@ -11,6 +11,10 @@ poke_api_key: "your-api-key-here"
 # Agents can still use create_draft. Override per account with allow_send.
 allow_send: true
 
+# Mark forwarded emails as read — set to true to mark emails as read after
+# forwarding to Poke. Defaults to false. Override per account with mark_as_read.
+mark_as_read: false
+
 accounts:
   # iCloud Mail — login is @icloud.com, send as your custom domain
   # Generate an App-Specific Password: https://support.apple.com/en-us/102654
@@ -24,6 +28,7 @@ accounts:
     from_address: "you@yourdomain.com"  # Override From: header (login is @icloud.com but send as custom domain)
     watch_folders:
       - INBOX
+    # mark_as_read: false  # Keep emails unread after forwarding
 
   # Custom SMTP server — SMTP falls back to IMAP credentials if not specified
   # - id: work

src/server.py

@@ -194,10 +194,12 @@ def parse_accounts(config: dict) -> list[dict]:
                     os.environ.get("SMTP_USERNAME", os.environ["IMAP_USERNAME"]),
                 ),
                 "watch_folders": ["INBOX"],
+                "mark_as_read": os.environ.get("MARK_AS_READ", "false").lower() == "true",
             }
         ]
 
     global_allow_send = config.get("allow_send", True)
+    global_mark_as_read = config.get("mark_as_read", False)
     required = ("imap_host", "imap_username", "imap_password")
     for i, acc in enumerate(accounts):
         acc.setdefault("id", f"account-{i}")
@@ -210,6 +212,7 @@ def parse_accounts(config: dict) -> list[dict]:
         acc.setdefault("smtp_password", acc.get("imap_password"))
         acc.setdefault("from_address", acc.get("smtp_username"))
         acc.setdefault("allow_send", global_allow_send)
+        acc.setdefault("mark_as_read", global_mark_as_read)
         for field in required:
             if field not in acc:
                 raise RuntimeError(
@@ -491,6 +494,7 @@ async def watch_folder(
                     email_data = parse_email_message(raw)
                     await forward_to_poke(email_data, account, webhook_url, api_key)
 
+                if account.get("mark_as_read", False):
                     await asyncio.to_thread(client.set_flags, new_uids, [b"\\Seen"])
                 existing_unseen.update(new_uids)
 
@@ -535,6 +539,7 @@ async def _poll_folder(
                         continue
                     email_data = parse_email_message(raw)
                     await forward_to_poke(email_data, account, webhook_url, api_key)
+                if account.get("mark_as_read", False):
                     await asyncio.to_thread(client.set_flags, uids, [b"\\Seen"])
         except Exception as e:
             logger.warning("[%s/%s] Poll error: %s", account["id"], folder, e)