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DropDue
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Check a hash before it costs you.

Get the field order wrong and every match fails silently. Paste one identifier, see the hash DROP would look for, and compare it against the one you expect.

Hash checkerRuns in your browser

Lowercased and trimmed. Dots and plus signs are kept.

Leave it empty to just see your own hash.

Fill the row in and check it. Nothing you type is sent anywhere or stored.

What DROP expects for Email, in order
  1. 01Strip surrounding whitespace.
  2. 02Lowercase the whole value. Dots and plus signs stay.
  3. 03SHA-256 over the UTF-8 bytes, Base64 out, no separators.

DropDue runs this check on every row of every cycle, and keeps the result in a log you can hand to counsel.

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Nothing typed here is sent anywhere or stored. The normalization rules are the DROP technical specification’s own. Not affiliated with the CPPA. Not legal advice.