{
"email": "[email protected]",
"syntax_ok": true,
"local_part_length": 8,
"domain": "example.com",
"has_mx": false,
"mx": [
{
"preference": 0,
"host": ""
}
],
"has_a": true,
"null_mx": true,
"disposable": false,
"role": false,
"free_mail": false,
"verdict": "invalid",
"reasons": [
"domain publishes null MX (accepts no mail)"
],
"note": "DNS checks only, no SMTP probing: whether the mailbox itself exists is not checked. Nothing is stored.",
"sources": [
{
"name": "Live DNS lookup (MX/A/AAAA) via public DNS resolvers"
},
{
"name": "Public disposable-domain blocklist",
"license": "CC0 1.0",
"snapshot": "2026-10-17"
}
]
}
curl --location --request GET 'https://zylalabs.com/api/14519/email+verification+and+dns+check+api/37041/[email protected]' --header 'Authorization: Bearer YOUR_API_KEY'
{
"domain": "github.com",
"status": "NOERROR",
"exists": true,
"dnssec_validated": false,
"records": {
"A": [
{
"data": "140.82.114.3",
"ttl": 27
}
],
"AAAA": [],
"MX": [
{
"data": "0 github-com.mail.protection.outlook.com.",
"ttl": 300,
"priority": 0,
"host": "github-com.mail.protection.outlook.com"
}
],
"NS": [
{
"data": "dns1.p08.nsone.net.",
"ttl": 675
},
{
"data": "dns2.p08.nsone.net.",
"ttl": 675
},
{
"data": "dns3.p08.nsone.net.",
"ttl": 675
},
{
"data": "dns4.p08.nsone.net.",
"ttl": 675
},
{
"data": "ns-1283.awsdns-32.org.",
"ttl": 675
},
{
"data": "ns-1707.awsdns-21.co.uk.",
"ttl": 675
},
{
"data": "ns-421.awsdns-52.com.",
"ttl": 675
},
{
"data": "ns-520.awsdns-01.net.",
"ttl": 675
}
],
"TXT": [
{
"data": "00Dd0000000hHE0=1TBKg000000TN2r",
"ttl": 75
},
{
"data": "MS=6BF03E6AF5CB689E315FB6199603BABF2C88D805",
"ttl": 75
},
{
"data": "MS=ms44452932",
"ttl": 75
},
{
"data": "MS=ms58704441",
"ttl": 75
},
{
"data": "TAILSCALE-xOzoDvFUzZr5YYVCQFuD",
"ttl": 75
},
{
"data": "adobe-idp-site-verification=b92c9e999aef825edc36e0a3d847d2dbad5b2fc0e05c79ddd7a16139b48ecf4b",
"ttl": 75
},
{
"data": "anthropic-domain-verification-4az7qn=if8YWuRRqwLycGJDooumzHtxm",
"ttl": 75
},
{
"data": "apple-domain-verification=RyQhdzTl6Z6x8ZP4",
"ttl": 75
},
{
"data": "atlassian-domain-verification=jjgw98AKv2aeoYFxiL/VFaoyPkn3undEssTRuMg6C/3Fp/iqhkV4HVV7WjYlVeF8",
"ttl": 75
},
{
"data": "calendly-site-verification=at0DQARi7IZvJtXQAWhMqpmIzpvoBNF7aam5VKKxP",
"ttl": 75
},
{
"data": "cursor-domain-verification-gtfwmt=1rfLOtiTngX5QSxD5HvNKTvm3",
"ttl": 75
},
{
"data": "docusign=087098e3-3d46-47b7-9b4e-8a23028154cd",
"ttl": 75
},
{
"data": "facebook-domain-verification=39xu4jzl7roi7x0n93ldkxjiaarx50",
"ttl": 75
},
{
"data": "google-site-verification=82Le34Flgtd15ojYhHlGF_6g72muSjamlMVThBOJpks",
"ttl": 75
},
{
"data": "google-site-verification=UTM-3akMgubp6tQtgEuAkYNYLyYAvpTnnSrDMWoDR3o",
"ttl": 75
},
{
"data": "jamf-site-verification=XtaPNIYghF_e_xRDI8CjgQ",
"ttl": 75
},
{
"data": "krisp-domain-verification=ZlyiK7XLhnaoUQb2hpak1PLY7dFkl1WE",
"ttl": 75
},
{
"data": "loom-site-verification=f3787154f1154b7880e720a511ea664d",
"ttl": 75
},
{
"data": "miro-verification=d2e174fdb00c71e0bcf58f8e58c3da2dd80dcfa9",
"ttl": 75
},
{
"data": "openai-domain-verification=dv-3nh33eQwdkotMIAzLrIDVZo1",
"ttl": 75
},
{
"data": "serval-domain-verification-ydryhj=qbkiEakpwEpTvHh5fIiCqtaue",
"ttl": 75
},
{
"data": "shopify-verification-code=t1YPwcmvnxZyBycaCpk1MPyWoFs72o",
"ttl": 75
},
{
"data": "stripe-verification=f88ef17321660a01bab1660454192e014defa29ba7b8de9633c69d6b4912217f",
"ttl": 75
},
{
"data": "v=spf1 ip4:192.30.252.0/22 include:spf.protection.outlook.com include:_netblocks.google.com include:_netblocks2.google.com include:mail.zendesk.com include:_spf.salesforce.com include:servers.mcsv.net include:mktomail.com include:sendgrid.net ip4:62.253.227.114 ip4:166.78.69.169 ip4:166.78.69.170 ip4:166.78.71.131 ~all",
"ttl": 75
}
],
"CNAME": [],
"CAA": [
{
"data": "0 issue \"digicert.com\"",
"ttl": 3600
},
{
"data": "0 issue \"globalsign.com\"",
"ttl": 3600
},
{
"data": "0 issue \"letsencrypt.org\"",
"ttl": 3600
},
{
"data": "0 issue \"sectigo.com\"",
"ttl": 3600
},
{
"data": "0 issuewild \"digicert.com\"",
"ttl": 3600
},
{
"data": "0 issuewild \"letsencrypt.org\"",
"ttl": 3600
},
{
"data": "0 issuewild \"sectigo.com\"",
"ttl": 3600
}
]
},
"mail": {
"accepts_mail": true,
"mx_hosts": [
"github-com.mail.protection.outlook.com"
],
"spf": "v=spf1 ip4:192.30.252.0/22 include:spf.protection.outlook.com include:_netblocks.google.com include:_netblocks2.google.com include:mail.zendesk.com include:_spf.salesforce.com include:servers.mcsv.net include:mktomail.com include:sendgrid.net ip4:62.253.227.114 ip4:166.78.69.169 ip4:166.78.69.170 ip4:166.78.71.131 ~all",
"spf_all": "~all",
"spf_multiple": false,
"dmarc": "v=DMARC1; p=quarantine; sp=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1",
"dmarc_policy": "quarantine",
"dmarc_pct": 100,
"dmarc_rua": "mailto:[email protected]",
"warnings": []
},
"resolver": "primary",
"checked_at": "2026-10-29T00:50:35.640Z",
"sources": [
{
"name": "Public DNS resolvers (DNS-over-HTTPS)"
}
]
}
curl --location --request GET 'https://zylalabs.com/api/14519/email+verification+and+dns+check+api/37042/dns+lookup?domain=github.com' --header 'Authorization: Bearer YOUR_API_KEY'
注册后,每个开发者都会被分配一个个人 API 访问密钥,这是一个唯一的字母和数字组合,用于访问我们的 API 端点。要使用 邮箱验证和DNS检查 API 进行身份验证,只需在 Authorization 标头中包含您的 bearer token。
| 标头 | 描述 |
|---|---|
授权
|
必需
应为 Bearer access_key. 订阅后,请查看上方的"您的 API 访问密钥"。
|
电子邮件验证端点返回有关电子邮件语法、域名MX/A记录以及一次性、基于角色和免费电子邮件地址的标志的数据 DNS查找端点提供DNS记录(A、AAAA、MX等)、邮件认证检查(SPF、DMARC)和DNSSEC验证状态
电子邮件验证的关键字段包括“语法正确”“有MX记录”“一次性”和“判决”对于DNS查找,重要字段是“状态”“存在”“DNSSEC已验证”和“记录”,详细说明了各种DNS记录类型
响应数据采用JSON格式结构化。对于电子邮件验证,它包括电子邮件有效性和标记的摘要。DNS查询响应根据"records"键按记录类型组织数据,详细说明每个记录的数据和TTL
电子邮件验证端点提供电子邮件有效性检查,而DNS查找端点提供全面的DNS记录、邮件服务器配置以及像SPF和DMARC这样的认证政策
用户可以通过指定用于验证的电子邮件地址或用于DNS查找的域名来定制请求 每个端点接受一个电子邮件或域名作为参数 允许针对性的查询
典型的用例包括验证市场营销活动的电子邮件地址 确保可送达性 以及检查电子邮件安全的域配置 企业可以利用这些数据来降低反弹率并增强通信的可靠性
不 它检查语法 通过DNS-over-HTTPS查找域名的MX/A记录 并标记一次性 邮件角色和免费邮件地址 它无法确认邮箱本身是否存在 地址不会被存储或记录
可交付领域 风险或无效 以及各个标志
一个域名在一次调用中获取A AAAA MX NS TXT CNAME CAA SOA SRV HTTPS DS等记录,并进行MX主机的邮件认证检查 SPF和DMARC政策以及DNSSEC验证标志