// tools

Free email tools

Find out if an email is tracking you, or work out why one bounced, was delayed or looks suspicious. Everything runs in your browser, so nothing you paste is sent anywhere.

1×1 tracking pixels Email tracker checker Find the hidden images that tell senders when and where you opened their email.
Received · SPF · DKIM · DMARC Email header analyser See the route an email took, the delay at each hop, and whether the sender passed authentication.
550 5.1.1 SMTP error code lookup Paste a bounce message to find out what went wrong and who needs to fix it.

A different email address for every website

addy.io gives you unlimited aliases that forward to your real inbox. Turn one off the moment it gets spam.

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