How to change your quiet hour settings for SMS flows

You will learn

Learn how to change your quiet hour settings in Klaviyo, including: 

• Changing whether quiet hours are based on either the phone number's:
  • Area code (for the US and Canada)
    Or
  • Eastern Time zone 
• Updating when quiet hours are in effect for flow messages

For more information about quiet hours, check out our article on understanding quiet hours. 

Before you begin

Please note the following:

• Several countries have laws against sending during quiet hours.
• Quiet hours are only available for flows; however, you will get a warning if you attempt to send a campaign during quiet hours.
• Klaviyo does not set quiet hours on a daily basis. Your chosen quiet hours will apply to all days of the week.
• It’s recommended that you set up quiet hours so that flow messages are not sent between 9 p.m. and 8 a.m. in your recipient’s local time (certain states may have stricter quiet hour rules). 
  • If you send to recipients in Alaska or Hawaii, either use quiet hours by area code or adjust the hours so that you aren’t sending between 8 p.m. and 2 p.m. ET.

Change whether quiet hours is based on area code or eastern time zone

1. Click your account name in the bottom left corner.
2. Navigate to Settings > SMS > Sender preferences. 
   
3. Scroll to the SMS quiet hours section. 
4. Check the option you want to use for quiet hours:
   • Use phone number area code (recommended).
   • Use eastern time zone. 
     
5. Click Save to confirm your changes. 

Update quiet hours window

To adjust your account’s default Klaviyo SMS quiet hours:

1. Navigate to your account name in the lower left-hand corner.
2. Click Settings > SMS > Sender preferences.
   
3. Review the times listed for quiet hours.
   The 2 times will represent the range that a message cannot be sent in the time zone being used. For example, you could adjust your quiet hours so that a message cannot be sent between 7:30 p.m. and 11:30 a.m. Eastern Time in the United States and Canada.
4. Click the dropdown under Stop sending to change when quiet hours should start (i.e., what time the flow stops sending SMS).
   
5. Click the dropdown under Resume sending to change when quiet hours should end (i.e., what time the flow can begin to send out SMS).
6. Once you update your quiet hours, click Save at the top of the page to save your setup.

Additional resources

• Understanding SMS and MMS quiet hours in flows
• Understanding when and how Klaviyo sets a profile's location