mashedmesh

Live · Email resolution

Hashed email resolution

Submit a batch of hashed emails to check for exact matches. A visible match includes the email address and its normalized SHA-256 hash.

Prepare a hashed email

  1. Trim whitespace from both ends of the email address.
  2. Lowercase the whole address and encode it as UTF-8.
  3. Compute SHA-256 and format the digest as 64 hex characters.

The normalized hash field is sha256_lc_hem. Keep dots, plus tags, and all other characters within the address as entered.

Read the result for each key

  • Match. Read the email address and hash from hit.row.
  • Masked match. The response signals the match and withholds row data.
  • Miss. The submitted hash had no exact match.

The API accepts batches of 1–100 keys and returns results in the submitted order. Each submitted key costs one credit, including misses and masked matches. Review data use before sending a list.