double-wrapped-email-address
Unconditional angle-bracket wrapping can double-wrap already-formatted emails
Applies to: JavaScript, Python, TypeScript
Why this matters
If an email address is already in 'Name <addr>' format, wrapping it again produces 'Name <Name <addr>>' which breaks email delivery and causes hard-to-debug bounce issues.
Catch it before it ships
pip install stablestack # or: npx stablestackstablestack # scans your project, QUAL015 includedstablestack explain QUAL015QUAL015 is part of the Pro rule set. See pricing — the free tier ships 24 checks with no signup.
False positive in your codebase? Suppress a single line with # noqa: QUAL015
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