Learn when your subscribers check their email, and meet them at the top of the inbox.

Which of your subscribers check their email over morning coffee? Who’s scrolling their smartphone on the bus ride home? And where are the night owls? With STO, you can get answers and put your data to work.

Send Time Optimization enables you to send campaigns to each subscriber when they’re most likely to open, click, and convert.

Here's how it works
  1. Our proprietary algorithm analyzes your ESP response data. 
  2. We figure out which days and times each customer is likely to open, click, and convert.
  3. We load the data into your ESP.
  4. You use the data to optimize send times for each customer ­– and watch the results roll in.