# Email Quality Indicators

> Quality indicator codes returned in quality.emails by the Egon Email validation service, with the meaning of each code.

Reference codes returned in `quality.emails` by the Egon Email validation service.

## Quality Codes

Detailed indicators describing email format compliance, domain verification, certified PEC statuses, and syntax modifications.

| Flag | Code | Description |
| --- | --- | --- |
| 0 (OK) | 0 | OK |
| 1 (Changed) | 463 | Double points |
| 1 (Changed) | 464 | IP Formatted email |
| 1 (Changed) | 465 | Points found |
| 1 (Changed) | 466 | Valid Domain |
| 1 (Changed) | 467 | Email with generic National first-level domain |
| 1 (Changed) | 468 | Email with national first-level domain |
| 1 (Changed) | 469 | Email with official domain |
| 1 (Changed) | 980 | First-level domain not certified |
| 1 (Changed) | 981 | Forced |
| 1 (Changed) | 982 | Substitution |
| 1 (Changed) | 983 | Email modified |
| 1 (Changed) | 984 | Domain modified |
| 1 (Changed) | 985 | Fake email |
| 1 (Changed) | 986 | Email starting with special characters |
| 1 (Changed) | 987 | URL in email |
| 1 (Changed) | 988 | Too many emails |
| 1 (Changed) | 989 | Additional information found |
| 1 (Changed) | 991 | Certified domain |
| 2/3 (Not valid) | 401 | Email not present |
| 2/3 (Not valid) | 402 | Wrong email format |
| 2/3 (Not valid) | 428 | Invalid characters |
| 2/3 (Not valid) | 443 | Wrong domain |
| 2/3 (Not valid) | 454 | Wrong top-level domain |
| 2/3 (Not valid) | 455 | Wrong domain |
| 2/3 (Not valid) | 456 | Not present |
| 2/3 (Not valid) | 457 | Second-level domain not present |
| 2/3 (Not valid) | 458 | Domain not certified |
| 2/3 (Not valid) | 460 | Format not valid |
| 2/3 (Not valid) | 461 | Email format not recognized |
| 2/3 (Not valid) | 462 | Unknown domain |
| 2/3 (Not valid) | 470 | Not valid domain |