array(2)
{
    array(6) {
    [0]=>
    array(2) {
      ["email"]=>
      string(17) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [1]=>
    array(1) {
      ["from"]=>
      string(17) "email@test.com"
    }
    [2]=>
    array(1) {
      ["to"]=>
      string(17) "email@test.com"
    }
    [3]=>
    array(2) {
      ["subject_one"]=>
      string(44) "Subject: Undelivered Mail Returned to Sender"
      ["subject_two"]=>
      string(122) "Subject: Undelivered Mail Returned to Sender"
    }
    [4]=>
    array(1) {
      ["date_email_sent"]=>
      string(37) "Date: Wed,  6 Feb 2019 18:01:28 +0800"
    }
    [5]=>
    array(1) {
      ["date_email_parse"]=>
      string(19) "2019-02-15 09:46:16"
    }
  }
  array(28) {
    [0]=>
    array(2) {
      ["email"]=>
      string(17) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [1]=>
    array(2) {
      ["email"]=>
      string(16) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [2]=>
    array(2) {
      ["email"]=>
      string(17) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [3]=>
    array(2) {
      ["email"]=>
      string(16) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [4]=>
    array(2) {
      ["email"]=>
      string(21) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [5]=>
    array(2) {
      ["email"]=>
      string(21) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [6]=>
    array(2) {
      ["email"]=>
      string(19) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [7]=>
    array(2) {
      ["email"]=>
      string(16) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [8]=>
    array(2) {
      ["email"]=>
      string(14) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [9]=>
    array(2) {
      ["email"]=>
      string(14) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [10]=>
    array(2) {
      ["email"]=>
      string(14) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [11]=>
    array(2) {
      ["email"]=>
      string(17) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [12]=>
    array(2) {
      ["email"]=>
      string(18) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [13]=>
    array(2) {
      ["email"]=>
      string(19) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [14]=>
    array(2) {
      ["email"]=>
      string(19) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [15]=>
    array(2) {
      ["email"]=>
      string(17) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [16]=>
    array(2) {
      ["email"]=>
      string(14) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [17]=>
    array(2) {
      ["email"]=>
      string(14) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [18]=>
    array(2) {
      ["email"]=>
      string(16) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [19]=>
    array(2) {
      ["email"]=>
      string(15) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [20]=>
    array(2) {
      ["email"]=>
      string(16) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [21]=>
    array(2) {
      ["email"]=>
      string(18) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [22]=>
    array(2) {
      ["email"]=>
      string(16) "email@test.com"
      ["signature"]=>
      string(29) "Host or domain name not found"
    }
    [23]=>
    array(1) {
      ["from"]=>
      string(17) "email@test.com"
    }
    [24]=>
    array(1) {
      ["to"]=>
      string(21) "email@test.com"
    }
    [25]=>
    array(2) {
      ["subject_one"]=>
      string(44) "Subject: Undelivered Mail Returned to Sender"
      ["subject_two"]=>
      string(175) "Subject: Undelivered Mail Returned to Sender"
    }
    [26]=>
    array(1) {
      ["date_email_sent"]=>
      string(37) "Date: Wed, 15 Aug 2018 17:36:18 +0800"
    }
    [27]=>
    array(1) {
      ["date_email_parse"]=>
      string(19) "2019-02-15 09:46:20"
    }
  }
}