# SendGrid: 403 Forbidden — The from address does not match a verified Sender Identity. Mail cannot be sent until this error is resolved

**Code:** `SendGrid 403: from address does not match a verified Sender Identity` · **Category:** Email / SMTP · **Seen on:** SMTP

SendGrid only sends from addresses or domains you have verified (single sender or domain authentication).

## Meaning

Verify a Single Sender (click the email link) or authenticate your whole domain with the DNS records SendGrid gives you, then use a From address on that identity. API keys also need "Mail Send" permission, and free accounts may be held for review.

## Common causes

- From address not verified in Sender Authentication
- Domain authentication DNS records not added or still pending
- API key lacks Mail Send permission
- From uses a different domain than the authenticated one
- Account under review

## Quick fix

1. Settings → Sender Authentication → verify a single sender or the domain
2. Use a From address on that identity
3. Give the API key Mail Send access

## Detailed fix by platform

### curl

1. Test the key: `curl -s -o /dev/null -w "%{http_code} " https://api.sendgrid.com/v3/scopes -H "Authorization: Bearer $SENDGRID_API_KEY"`

## How to diagnose

1. **Identity** — Sender or domain verified?
2. **DNS** — Records published?
3. **Key** — Mail Send permission?

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Source: [WhatIsMyError](https://whatismyerror.com/errors/email/sendgrid-from-address-not-verified)