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fix: handle Proton Bridge IMAP response format in _batch_fetch_headers #112

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Merged
Wh1isper merged 1 commit into from
Feb 14, 2026
Merged

fix: handle Proton Bridge IMAP response format in _batch_fetch_headers #112

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11 changes: 11 additions & 0 deletions mcp_email_server/emails/classic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -343,13 +343,24 @@ async def _batch_fetch_headers(
for i, item in enumerate(data):
if not isinstance(item, bytes) or b"BODY[HEADER]" not in item:
continue
# First try to find UID in the same line (standard format)
uid_match = re.search(rb"UID (\d+)", item)
if uid_match and i + 1 < len(data) and isinstance(data[i + 1], bytearray):
uid = uid_match.group(1).decode()
raw_headers = bytes(data[i + 1])
metadata = self._parse_headers(uid, raw_headers)
if metadata:
results[uid] = metadata
# Proton Bridge format: UID comes AFTER header data in a separate item
# Format: [i]=b'N FETCH (BODY[HEADER] {size}', [i+1]=bytearray(headers), [i+2]=b' UID xxx)'
elif i + 2 < len(data) and isinstance(data[i + 1], bytearray):
uid_after_match = re.search(rb"UID (\d+)", data[i + 2]) if isinstance(data[i + 2], bytes) else None
if uid_after_match:
uid = uid_after_match.group(1).decode()
raw_headers = bytes(data[i + 1])
metadata = self._parse_headers(uid, raw_headers)
if metadata:
results[uid] = metadata

return results

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