ksufer 5a8fa7cf31 Fix #13119: Use email.utils to fix IMAP parsing for names with commas (#13120) ...

## Type of Change
- [x] Bug fix

## Description
Closes #13119

The current IMAP connector uses `split(',')` to parse email headers,
which crashes when a sender's display name contains a comma inside
quotes (e.g., `"Doe, John" <john@example.com>`).

This PR replaces the manual string splitting with Python's standard
`email.utils.getaddresses`. This correctly handles RFC 5322 quoted
strings and prevents the `RuntimeError: Expected a singular address`.

## Checklist
- [x] I have checked the code and it works as expected.

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Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

2026-02-24 19:18:55 +08:00

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