In part 1, some of the accuracy problems with tracking open rates were discussed. Furthermore, while open rates measure trackable opens across entire email campaigns, seed tracking offers specific metrics by email provider. This allows easy identification of where and what delivery issues are occurring. This is yet once more reason why a seed based tracking solution is an essential tool for every email marketer.
Having measurable results from specific email providers and knowing how each is handling a campaign (inbox, bulk/spam, or completely filtered out) is essential and the most effective way to increase email open rates.