內容簡介
Mail7 Email Validation 外掛可即時檢查使用者輸入的電子郵件地址，透過 Mail7 API 避免假郵件和無法送達的地址進入使用者名單、評論和表單提交，從而減少退信、垃圾郵件並保持名單的整潔。
【主要功能】
• 實時檢查電子郵件地址的有效性
• 支援多種檢查方式，包括語法、域名 MX 記錄等
• 不會預設阻擋未知地址，避免誤拒真實用戶
• 快速緩存結果，減少 API 調用
• 在 Mail7 API 短暫無法連接時保持正常運作
外掛標籤
開發者團隊
原文外掛簡介
Mail7 Email Validation checks email addresses in real time as they are entered, using the Mail7 API. It stops fake and undeliverable addresses from getting into your user base, comments and form submissions – which means fewer bounces, less spam and cleaner lists.
Three verdicts, not two. Real mail servers do not always give a straight answer: catch-all domains, greylisting and disposable providers make some addresses genuinely unverifiable. Mail7 returns Valid, Not Valid, or Unknown, and this plugin does not block Unknown addresses by default, so you never turn away a real person over an address that simply could not be confirmed.
What it checks
Syntax / format
Domain MX records (can the domain receive mail at all)
Live SMTP mailbox check
Disposable / temporary address detection
Where it plugs in
WordPress user registration
Comment author emails
Contact Form 7 email fields
WPForms email fields
Reliable by default
Results are cached, so the same address is never re-checked (fast, and no wasted API calls).
If the Mail7 API is briefly unreachable, the plugin fails open – your forms keep working, no one is ever locked out by an outage.
API key
Works out of the box on Mail7’s free anonymous tier (rate-limited). For higher volume, paste a Mail7 API key in the settings – get one at mail7.net.
External services
This plugin sends each submitted email address to the Mail7 API (https://mail7.net/api/validate-single) to determine whether it is deliverable. Only the email address being validated is sent. See the Mail7 Privacy Policy and Terms of Service.
