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what is the best software for clean maillist

Discussion in 'White Hat SEO' started by datingnl, Mar 31, 2017.

  1. datingnl

    datingnl Newbie

    Joined:
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    good day

    I have a rather old mail list with like 10% inactive mail addresses. Now when i try to send a newsletter or message it gets in spam for sure.

    So before i send another message i want to clean out the mail list and i search in google for good software that can check if a mail is active ( bulk )

    What software will work ? And does anyone have any option included a key/serial?