VTO is an email service created by Yahoo to help senders improve incremental and life-time subscr...

Below is a high-level overview of how VTO works with a sender, Yahoo, and subscriber. Account se...

Prerequisites You must have DKIM implemented to use VTO. Learn how to set up DKIM and what a DKIM...

There are three options available to identify a VTO campaign.  X-header (existing) A sender can u...

View Time Optimization (VTO) identifies your campaigns using a combination of your DKIM signing d...

Occasionally, you may need to edit a VTO campaign you have already begun to set up (draft) or com...

Yes, continue to seed as you normally would. Filtering takes place at the gateway, before VTO hap...

You can review your campaign performance report within 48 hours of campaign completion. In VTO, f...

At the far right of the All Campaigns table, select the Export to CSV button (cloud icon). Your c...

At the top right of the VTO module, select the Credits & Usage button (gear icon). You can also s...

What performance improvements can I expect when using VTO? Yahoo cannot guarantee specific perfor...

VTO works with any ESP. You can send a VTO email using your sending domain, subject line, and DKI...

STO Offered from some ESPs and sending platforms, but not all. Sending an email at a specific ti...

When comparing sender engagement data with Yahoo's VTO engagement data, senders should expect sim...

Your email only receives VTO placement benefits when sending to subscribers located in the follow...