n8n LabBeginner
Clean and Lowercase Email Strings in n8n
Users often type their emails with accidental capital letters. Convert the incoming email string to all lowercase letters.
Live Execution Simulator
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Incoming Data
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n8n Node
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Next Step
> Ready. Type your expression below and click "Check Answer" to run the node.
Incoming Payload / Data:
{
"raw_email": "[email protected]"
}
$json.raw_email.
⚙️ Your expression is executed against test data — any correct solution passes. +10 XP
✅ Solution & explanation
$json.raw_email.toLowerCase()
Output: [email protected]
toLowerCase() is a standard JavaScript string method that converts every character to lowercase. Email addresses are case-insensitive, so normalizing them prevents duplicate contacts in your CRM.💡 Pro tip: Chain .trim() to also remove accidental spaces: $json.raw_email.trim().toLowerCase().
Also accepted: trim().toLowerCase(), toLowerCase().trim()