Clean email addresses automatically, every time.
Normalize, lowercase, trim, and canonicalize email addresses in one API call.
Trusted by teams at
Normalize email input with one call.
The API trims whitespace, lowercases the address, fixes common provider aliases, and returns a canonical email — so every address stored in your system is consistent.
{
"email": " [email protected] ",
"normalized": "[email protected]",
"local": "user",
"domain": "gmail.com",
"issues": "alias_resolved"
}
One request, instant normalization.
POST /v1/validation/email-normalize with the email in the body and your API key in the header. No SDK required.
POST /v1/text/normalize
Host: requiems.xyz
requiems-api-key: YOUR_API_KEY
Content-Type: application/json
{"email": "[email protected]"}
Real problems, real users.
Email Normalizer fits wherever contact data quality matters.
Data Import
Standardize email data before import
Normalize emails before bulk import into your database. Prevent format variations from creating duplicate records.
CRM / Data
Merge duplicate accounts with normalized emails
Use the normalized form as a deduplication key. Identify accounts that belong to the same person across different email formats.
Integrations
Improve email matching across systems
Normalize before cross-system lookups. Ensure [email protected] and [email protected] match as the same identity.
Analytics
Normalize signup emails for analytics
Standardize at point of capture. Keep analytics and segmentation consistent regardless of how users type their address.
CRM / Data
Reduce false duplicates in CRM
Stop treating email variants as separate contacts. Normalization reduces bloated contact counts and improves list hygiene.
Email Marketing
Clean email records before outreach
Run your list through the normalizer before a send. Catch variation-caused bounces before they affect sender reputation.
Use together with complementary APIs.
Requiems APIs are designed to compose. Combine Email Normalizer with other endpoints to build a complete contact validation pipeline with a single API key.
Email Normalizer + Email Validator
Normalize then validate for complete email hygiene.
Clean, canonical email that is also confirmed deliverable — ideal for signup and import flows.
Email Normalizer + Phone Validator
Normalize email and validate phone at the same step.
Consistent, verified contact data across both channels from a single onboarding call.
Email Normalizer + Domain Checker
Normalize email and verify its domain health together.
Canonical email paired with domain trust score — higher confidence before outreach.
Frequently asked questions
Automate this with Requiems.
One API key. Email normalization and more across Requiems.