A/B test delivery

Learn how to set up delivery in the A/B Test composer.


In the Delivery step, first set up the timing. You can send immediately, schedule the delivery, or send at the user’s optimal time.

Send Now

Send the message immediately after review.


Choose an exact time of day to send the message.

  1. Enter a date in YYYY-MM-DD format and select the time and time zone.

  2. (Optional) Select Delivery By Time Zone to deliver messages at the specified time in your audience’s time zones. For example, a push notification scheduled for 9 a.m. will arrive for people on the east coast at 9 a.m. Eastern Time, in the midwest an hour later at 9 a.m. Central Time, then on the west coast two hours after that, at 9 a.m. Pacific Time.


    Messages are only delivered by time zone to channels that have a time zone set.

    App and Web channels have their time zone set automatically by the SDK.

    Email, SMS, and Open channels will only have a time zone if set through the channel registration API. To do so, enter a value for the "timezone" key in the request body. See:


    • A message delivered by time zone includes a Delivery by Time Zone section in its message report. See: View Message Detail.
    • The API equivalent of Delivery By Time Zone is Push to Local Time.


Send the message on a specific date and at each user’s Optimal Send TimeAn algorithm that determines the best hour for optimal engagement activity — when each individual member of your audience is most likely to receive and act on your message. iOS, Android, and Amazon platforms only. . iOS, Android, and Amazon only.

Enter a date in YYYY-MM-DD format.

Airship recommends scheduling your message at least three days in advance due to the combination of time zones and optimal times. You can reduce the lead time if your audience is more localized, e.g., only in the United States or in a certain European region.


After configuring the timing, set up delivery options.

External data feeds

If your message includes External Data FeedsA connection to an external API. When you send a message, Airship uses a response from that API to personalize messages. , you must configure each feed listed in External data feed options.

  • Failure behavior — Determine how your message is handled if the feed fails. Select Abort sending the message or Send message without this data.

  • Default value for [var] — This displays the default value for each send time variable in the feed URL. You can change the value to override the default for this message only.