When the audience members enter the Send
time optimization stage, it will take some time to look up the optimal send
times for each user and assign them to optimal (hourly) send time
groups. The actual time depends on the
size of the audience members that enter. Sometimes the process will take so long, the optimal send time group
will not be created for the hour when the audience members entered. As a result, the send period will begin the
next hour.
For example: Let’s say your desired send
period is Monday, 9am through Tuesday, 8am. The size of the audience members is so large that the optimal send
time lookup takes a long time and the optimal send time group for Monday, 9am
is not created. The Send time
optimization stage will then delay the send period by 1 hour to Monday, 10am
through Tuesday, 9am.
Tip:
Currently, it takes roughly 40 minutes for the
Send time optimization stage to process an audience member size of 10 million messages (10MM) to
generate that first optimal send time group. To prevent the desired send period from being delayed and hour, you
can try entering audience members before the first hour of the send period. Do not enter your audience members more
than 60 minutes earlier than your desired send period; otherwise, you may
risk starting the sends earlier than expected.
For example: Let’s say the size of your
audience members is 10MM and your desired send period is Monday, 9am through
Tuesday, 8am. You can try to enter the
audience members into the Send time optimization stage on Monday, 8:40am.
Please refer to the Send Period Delay
Prevention example in the STO Programs section for additional guidance.
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