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Email

In today's data-driven landscape, having accurate and complete email data directly impacts your organization's efficiency, deliverability, and outreach success. Delpha's Email Finder and Email Validator solutions ensure your email database remains robust, accurate, and up-to-date by systematically discovering missing emails and verifying email addresses.

Delpha evaluates email data across four critical dimensions:

  • Completeness: Uses advanced Email Finder technology to locate and populate missing email addresses.

  • Validity: Employs a powerful Email Validator to confirm emails adhere to standard formatting rules and are deliverable.

  • Accuracy: Ensures that discovered emails match the intended individuals correctly.

  • Consistency: Compares the input value to its normalized version (not cross-source).

Additionally:

  • Email Validator classifies emails as personal or professional, supporting GDPR compliance and improving deliverability.

  • Email Finder offers AI-generated email recommendation for correcting or completing emails, accompanied by confidence scores to guide effective decision-making.

Delpha's integrated Email Finder and Email Validator provide a comprehensive health check and intelligent enrichment, delivering actionable insights that enhance communication success, regulatory compliance, and overall data integrity.

Submit email for finding and validation

post

Submit an email address for finding and validation. Returns a job ID for tracking the process.

Required scopes
This endpoint requires the following scopes:
  • : Access to the public API
Authorizations
OAuth2clientCredentialsRequired

OAuth2 client credentials flow for API access

Token URL:
Body

Payload to submit a new email quality job.

emailstring · nullableOptional

The email address

Example: victorgoubet@orange.fr
first_namestring · nullableOptional

First name

Example: Victor
last_namestring · nullableOptional

Last name

Example: Goubet
websitestring · nullableOptional

Website URL

Example: https://delpha.io/
Responses
202

Job submitted to assess_email_v16

application/json

Response after submitting a new email quality job.

job_idstring · nullableOptional

The job ID. Required if status <= 300.

Example: 21014abc65004d2781d2e0ef4c9fbb46
messagestringRequired

The message to return

Example: Job submitted to assess_email_v16
statusstring · enumRequired

The status of the process

Example: SUCCESSPossible values:
status_codeintegerRequired

The status code to return

Example: 202
post/v1/email
POST /v1/email HTTP/1.1
Host: api.delpha.io
Authorization: Bearer YOUR_OAUTH2_TOKEN
Content-Type: application/json
Accept: */*
Content-Length: 108

{
  "email": "victorgoubet@orange.fr",
  "first_name": "Victor",
  "last_name": "Goubet",
  "website": "https://delpha.io/"
}
{
  "job_id": "21014abc65004d2781d2e0ef4c9fbb46",
  "message": "Job submitted to assess_email_v16",
  "status": "SUCCESS",
  "status_code": 202
}

Get email finder and validator job status

get

Retrieve the result and status of a previously submitted email finder and validator job.

Required scopes
This endpoint requires the following scopes:
  • : Access to the public API
Authorizations
OAuth2clientCredentialsRequired

OAuth2 client credentials flow for API access

Token URL:
Path parameters
job_idstringRequired

The unique identifier of the email job

Example: {"summary":"Sample job ID","value":"21014abc65004d2781d2e0ef4c9fbb46"}
Responses
200

Job succeeded.

application/json

Response after retrieving the status and result of an email quality job.

messagestringRequired

A human-readable message describing the current state or outcome of the job.

Example: Job succeeded.
statusstring · enumRequired

The status of the process

Example: SUCCESSPossible values:
status_codeintegerRequired

The HTTP status code representing the job's current state.

Example: 200
process_timenumber · nullableOptional

The total time taken to process the job, in seconds.

Example: 0.123
get/v1/email/{job_id}
GET /v1/email/{job_id} HTTP/1.1
Host: api.delpha.io
Authorization: Bearer YOUR_OAUTH2_TOKEN
Accept: */*

{
  "message": "Job succeeded.",
  "status": "SUCCESS",
  "status_code": 200,
  "result": {
    "label": "OK",
    "normalized_value": "victorgoubet@orange.fr",
    "provider": "Orange",
    "email_domain": "orange.fr",
    "email_domain_qualification": "nominative@perso",
    "email_status": "Valid",
    "suggestions": [
      {
        "value": "victor.goubet@delpha.io",
        "score": 0.7260620227245627
      }
    ],
    "website_domain": "delpha.io",
    "website_domain_qualification": "nominative@pro",
    "suggestions_from_website": [
      {
        "value": "victor.goubet@delpha.io",
        "score": 0.7260620227245627
      }
    ],
    "data_type": "email",
    "scores": {
      "validity": 1,
      "completeness": 1,
      "accuracy": 0.7116992363593002,
      "consistency": 0
    }
  },
  "process_time": 0.123
}

Submit a batch of email items

post

Submit 1..100 email items for asynchronous batch processing as ONE job (never a per-item fan-out). Returns a job_id immediately (202); poll GET /v1/email/batch/{job_id} for status and results. Each item is validated identically to the single-route POST /v1/email payload; a payload with 0 items or more than 100 is rejected with 422.

Required scopes
This endpoint requires the following scopes:
  • : Access to the public API
Authorizations
OAuth2clientCredentialsRequired

OAuth2 client credentials flow for API access

Token URL:
Body

Batch envelope for POST /v1/email/batch: {"items": [...]} (1..100 items, 422 beyond); each item is shaped exactly like the single-route POST /v1/email payload (reused here by $ref as EmailSubmitInput).

Responses
202

Batch submitted

application/json

Response after submitting a batch quality job.

job_idstring · nullableOptional

The job ID. Required if status <= 300.

Example: 21014abc65004d2781d2e0ef4c9fbb46
item_countinteger · nullableOptional

Number of items accepted in the batch (present on success).

Example: 100
messagestringRequired

The message to return

Example: Batch submitted
statusstring · enumRequired

The status of the process

Example: SUCCESSPossible values:
status_codeintegerRequired

The status code to return

Example: 202
post/v1/email/batch
POST /v1/email/batch HTTP/1.1
Host: api.delpha.io
Authorization: Bearer YOUR_OAUTH2_TOKEN
Content-Type: application/json
Accept: */*
Content-Length: 120

{
  "items": [
    {
      "email": "victorgoubet@orange.fr",
      "first_name": "Victor",
      "last_name": "Goubet",
      "website": "https://delpha.io/"
    }
  ]
}
{
  "job_id": "21014abc65004d2781d2e0ef4c9fbb46",
  "item_count": 100,
  "message": "Batch submitted",
  "status": "SUCCESS",
  "status_code": 202
}

Get email batch job status

get

Poll a batch of email items submitted via POST /v1/email/batch. 202 while running (with item_count/processed_count progress); 200 once SUCCEEDED (with counts, a presigned result_url, and result_data inlined when <=1MB); 409 if the credit reservation expired before delivery (resubmit); 500 if the job failed; 504 past the 24h ceiling (batch jobs run on Batch/Vertex timescales, hours not minutes).

Required scopes
This endpoint requires the following scopes:
  • : Access to the public API
Authorizations
OAuth2clientCredentialsRequired

OAuth2 client credentials flow for API access

Token URL:
Path parameters
job_idstringRequired

The unique identifier of the email batch job.

Example: {"summary":"Sample job ID","value":"21014abc65004d2781d2e0ef4c9fbb46"}
Responses
200

97/100 items succeeded

application/json

Response for GET /v1/email/batch/{job_id}. Each result_data.items[] entry is keyed to its request item by dispatch_key ({"record_id": "<job_id>#<index>"}). On success its result is the SAME object GET /v1/email/{job_id} returns for a single item. On failure it carries an error string instead of result.

messagestringRequired

A human-readable message describing the current state or outcome of the job.

Example: 97/100 items succeeded
statusstring · enumRequired

The status of the process

Example: SUCCESSPossible values:
status_codeintegerRequired

The HTTP status code representing the job's current state.

Example: 200
result_urlstring · nullableOptional

Presigned URL (1h expiry) to download the full batch result JSON from S3.

Example: https://delpha-api-batch-dev.s3.amazonaws.com/batch-results/<job_id>.json?...
item_countinteger · nullableOptional

Total number of items in the batch (present while the job is running).

processed_countinteger · nullableOptional

Number of items processed so far (present while the job is running; may be absent early in the job's lifecycle).

process_timenumber · nullableOptional

The total time taken to process the job, in seconds.

Example: 12.3
get/v1/email/batch/{job_id}
GET /v1/email/batch/{job_id} HTTP/1.1
Host: api.delpha.io
Authorization: Bearer YOUR_OAUTH2_TOKEN
Accept: */*

{
  "message": "97/100 items succeeded",
  "status": "SUCCESS",
  "status_code": 200,
  "counts": {
    "total": 100,
    "succeeded": 97,
    "failed": 3
  },
  "result_url": "https://delpha-api-batch-dev.s3.amazonaws.com/batch-results/<job_id>.json?...",
  "result_data": {
    "job_id": "21014abc65004d2781d2e0ef4c9fbb46",
    "usecase": "email",
    "counts": {
      "total": 2,
      "succeeded": 1,
      "failed": 1
    },
    "items": [
      {
        "dispatch_key": {
          "record_id": "21014abc65004d2781d2e0ef4c9fbb46#0"
        },
        "result": {
          "label": "OK",
          "normalized_value": "victorgoubet@orange.fr",
          "provider": "Orange",
          "email_domain": "orange.fr",
          "email_domain_qualification": "nominative@perso",
          "email_status": "Valid",
          "suggestions": [
            {
              "value": "victor.goubet@delpha.io",
              "score": 0.7260620227245627
            }
          ],
          "website_domain": "delpha.io",
          "website_domain_qualification": "nominative@pro",
          "suggestions_from_website": [
            {
              "value": "victor.goubet@delpha.io",
              "score": 0.7260620227245627
            }
          ],
          "data_type": "email",
          "scores": {
            "validity": 1,
            "completeness": 1,
            "accuracy": 0.7116992363593002,
            "consistency": 0
          }
        }
      },
      {
        "dispatch_key": {
          "record_id": "21014abc65004d2781d2e0ef4c9fbb46#1"
        },
        "error": "Processing failed for this item."
      }
    ]
  },
  "item_count": null,
  "processed_count": null,
  "process_time": 12.3
}
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