Verify email addresses in batch, validating syntax, DNS, SMTP, and other dimensions. Currently synchronous — each request takes approximately 5–30 seconds.

Request Information

• Get API keys: ACCESSKEY_ID:ACCESSKEY_SECRET
• Request Method: POST
• Request Path: /api/v1/email/BatchVerifyEmail
• Content-Type: application/json
• Rate Limit: 5 QPS, burst 5

Notes

• Emails currently supports up to 1 email address per request
• Exceeding the QPS limit will return error code 215209
• For large-scale verification, use the uSpeedo console to upload an Excel file
• Supported domains: gmail.com, outlook.com, hotmail.com, qq.com, 163.com, gmx.de, alice.it. Emails from other domains will return ResultStatus: 2 (Uncertain). We are continuously expanding supported domains — contact us if you need support for additional domains
• Billing follows the same rates as console validation — see Validation Billing & Credits for details

Emailsstring[]required

List of email addresses, up to 1 address per request

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Response Format

Field Name	Type	Description
RetCode	int	Return code, 0 indicates success
Message	string	Return message
RequestUuid	string	Unique request identifier
Action	string	Action identifier BatchVerifyEmail
Data	object	Verification result data

Data Fields

Field Name	Type	Description
SessionNo	string	Session ID (UUID) for this batch verification
TotalCount	int	Total number of emails
SuccessCount	int	Number of successfully verified emails
FailCount	int	Number of failures (format errors + service errors)
Results	array	List of successfully verified email results
FailContent	array	List of failure details

Results Item (BatchVerifyEmailResultItem)

Field Name	Type	Description
Email	string	Email address
ResultStatus	int	Overall result: 0=Valid, 1=Invalid, 2=Uncertain, 3=Risky, 4=Pending
RiskTag	int	Risk tag: 0=None, 1=Disposable, 2=Gibberish, 3=SpamTrap, 4=PublicMailbox
SyntaxStatus	int	Syntax check: 0=Pending, 1=Pass, 2=Fail, 3=Skip, 4=Unknown
DnsStatus	int	DNS check: 0=Pending, 1=Pass, 2=Fail, 3=Skip, 4=Unknown
DisposableStatus	int	Disposable email check: 0=Pending, 1=Pass, 2=Fail, 3=Skip, 4=Unknown
PublicMailboxStatus	int	Public mailbox check: 0=Pending, 1=Pass, 2=Fail, 3=Skip, 4=Unknown
GibberishStatus	int	Gibberish detection: 0=Pending, 1=Pass, 2=Fail, 3=Skip, 4=Unknown
SmtpStatus	int	SMTP verification: 0=Pending, 1=Pass, 2=Fail, 3=Skip, 4=Unknown
CatchAllStatus	int	Catch-All detection: 0=Pending, 1=Pass, 2=Fail, 3=Skip, 4=Unknown
SpamTrapStatus	int	SpamTrap detection: 0=Pending, 1=Pass, 2=Fail, 3=Skip, 4=Unknown

FailContent Item (BatchVerifyEmailFailContent)

Field Name	Type	Description
Email	string	Email address
Reason	string	Failure reason

Error Codes

RetCode	Description
0	Success
214403	Missing Parameter [Emails]
214405	Invalid Parameter, Emails count exceeds limit of 1
214406	Internal Service Error
215209	Email verification rate limit exceeded (QPS limit)

LANGUAGE

CREDENTIALS

👁️

🔒

🔑Log in to get ACCESSKEY_ID and ACCESSKEY_SECRET

URL

POST

CURL Request▼

curl -X POST "https://api.uspeedo.com/api/v1/email/BatchVerifyEmail" \
  -H "Content-Type: application/json" \
  -H "Accept: application/json" \
  -H "Authorization: Basic $(echo -n 'ACCESSKEY_ID:ACCESSKEY_SECRET' | base64)" \
  -d '{
  "Emails": [
    "example@example.com"
  ]
}'

RESPONSE

ExamplesSuccess ResponseError Response

Click Try It! to start a request and see the response here.