verify.linktree.bond
Port 25 status: checking...

Email Verification Engine

CSV can include multiple columns. Only one required email column is needed (`email`), and verification output is appended as `status` and `reason`.

Thread Controls

Set thread count before starting a batch. Running jobs can be scaled up/down live.

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Recommended-
Maximum Safe-
Running Jobs0
Active Checks0

Port 25 is essential for SMTP validation checks.

Verification checks used

  • Syntax check (`local@domain.tld` format)
  • Block disposable domains and role-based prefixes
  • MX DNS lookup for mail server availability
  • Catch-all detection using random recipient probe
  • SMTP `RCPT TO` probe against recipient mailbox
  • Soft-fail retry for transient SMTP response codes

Live Verification Status

Pie chart updates as emails are processed (valid/risky/invalid/pending).

Server Load vs Time

Live chart (1m load + active SMTP checks), updated every 2 seconds.

Manual Verification

Run one-off checks by email or by domain + email.

Batch CSV Verification

Upload stages one or multiple CSV files. Processing starts only when you click Start Verification.

Drop CSV files here or click to select
Staged files: None