Cross-Channel Testing

When running a promotion across email, push, and SMS simultaneously, you need consistent variant assignment so a customer sees the same creative approach everywhere. If one person receives the “urgency” email but the “exclusivity” push notification, you cannot draw clean conclusions about which messaging strategy works best. Campaign groups let you coordinate tests across channels while measuring each channel independently. Each campaign still tests a single channel, but the group ties them together for cross-channel comparison.

How liftstack handles cross-channel testing

• Create a campaign group linking campaigns across multiple channels
• Optional shared assignment ensures consistent variant labelling across channels
• Each channel gets its own verdict with channel-appropriate metrics (open rate for email, tap rate for push, click rate for SMS)
• Compare which channels deliver the strongest lift for different content strategies

When to use cross-channel testing

Cross-channel testing is most valuable during coordinated promotions: product launches, seasonal sales, loyalty events, or any campaign where the same message goes out across multiple channels at once. It answers questions that single-channel tests cannot, like whether an approach that wins in email also wins in push, or whether certain messaging resonates differently depending on the channel. These insights help you tailor your creative strategy per channel rather than assuming what works in one place works everywhere.