| Similarity | Rank | |
|---|---|---|
| outbound | 0.922 | 23742 |
| Inbound | 0.854 | 43617 |
| Outbound | 0.792 | 71475 |
| traffic | 0.729 | 1355 |
| forwarding | 0.705 | 20570 |
| deliverability | 0.700 | 86238 |
| autoresponders | 0.694 | 81360 |
| back-links | 0.683 | 75915 |
| e-marketing | 0.680 | 92399 |
| backlinks | 0.678 | 16298 |
| backlinking | 0.678 | 77703 |
| backlink | 0.677 | 34666 |
| autoresponder | 0.675 | 42971 |
| forwarders | 0.674 | 80220 |
| cross-channel | 0.670 | 87720 |
| off-page | 0.665 | 90038 |
| Forwarding | 0.664 | 65619 |
| on-page | 0.658 | 54971 |
| ISP's | 0.652 | 69720 |
| SMTP | 0.651 | 33439 |
| forwarder | 0.651 | 86026 |
| optimization | 0.649 | 6696 |
| B2B | 0.648 | 17118 |
| telemarketing | 0.646 | 33838 |
| one-way | 0.645 | 20527 |