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Parry Malm and team tested 287 keywords across 2.2bn e-mails and share the results, including the best and worst keywords, and some things they learned along the way.


  • SE

    Sean Ellis

    over 6 years ago #

    Registration required for full list, but lots of useful info pre registration wall.

  • JC

    Jeffrey Chew

    over 6 years ago #

    summary =

    1. quality content matters - write it in house and have clean data
    2. Quantity matters - more is always better
    3. test subject lines - word order, length, word choice

    good tips