You will learn
Learn about Smart Sending, which allows you to limit the number of emails, SMS messages, or push notifications someone can receive within a set period of time.
This is a good way to prevent your subscribers from receiving too many messages at once if you have many active flows and campaigns.
About Smart Sending
When an email, SMS message, or push notification has Smart Sending enabled, Klaviyo will automatically check to see if that profile has received a message from you within your account's Smart Sending period before it sends. If this profile has received another message from you recently, they will be skipped from receiving the current message.
Keep the following in mind when using Smart Sending:
- Emails and SMS messages have separate Smart Sending windows
- Email default: 16 hours
- SMS default: 24 hours
- Push notification default: 24 hours
- You can change the Smart Sending windows at any time
- Messages skipped due to Smart Sending are not rescheduled automatically
- For information on resending emails, read How to resend emails in Klaviyo
- Currently, it’s not possible to resend a text message to someone who was skipped due to Smart Sending except by doing so manually.
- Updating the smart sending window does not retroactively affect recipients
- Example: If you send an email campaign and then change the email Smart Sending window from 16 to 10 hours, anyone who received that campaign will be skipped from emails until the full 16 hours pass
Change the Smart Sending timeframe
As mentioned the Smart Sending timeframe for email and SMS are separate, so you can adjust one without affecting the other.
Email Smart Sending window
By default, the email Smart Sending window is 16 hours.
- Navigate to your organization name in the bottom left corner of your screen.
- Click Settings.
- Select Email.
- Update the number of hours under Smart Sending Period.
- Check the box to Ignore transactional messages if you send transactional emails.
- In almost all cases, Smart Sending should remain disabled for transactional emails, as these are messages that customers anticipate receiving and search for in their inboxes.
SMS Smart Sending window
By default, the SMS Smart Sending window is 24 hours.
- Navigate to your organization name in the bottom left corner of your screen.
- Click Settings.
- Select SMS.
- Edit your Smart Sending period within the SMS Sending Settings area.
Push notification Smart Sending window
- Navigate to your organization name in the bottom left corner of your screen.
- Click Settings.
- Select Push Notification.
- Edit your Smart Sending period within the Push Sending Settings area.
- Click Update Push Sending Settings.
Disable Smart Sending for a message
Campaigns
Smart Sending is enabled by default for all campaigns. You can choose to disable Smart Sending on a per-campaign basis. We recommend keeping Smart Sending turned on for most, if not all, marketing emails.
In step 1 of the campaign, toggle off the option to:
- Email: Skip recently emailed profiles.
- SMS: Skip recently messaged profiles.
Flows
Smart Sending is enabled by default for flow messages. You can choose to turn off Smart Sending for an individual flow message.
- Click on an individual flow message.
- Click Smart Sending under Settings on the left-hand side.
- Toggle off Smart Sending.
Smart Sending and A/B testing
A/B tests that receive no results due to Smart Sending are automatically cancelled. This means that everyone in the test pool for your A/B test campaign got skipped because they received another message too recently. If you receive an in-app notification like the one below, your A/B test has been canceled and you need to resend your campaign to reach your recipients.