Sending rules helps to prevent overwhelming email sends to contacts so that you won't annoy them with too many emails within a short period of time. Sending rules will only be applied for marketing emails.
It will not be applied to emails from other apps like reviews and back-in-stock.
Go to sending rules page to set default sending rules for account. By default, we will skip if same email has been delivered within the last 5 hours (300 minutes).
You can also override skip rules individually for each email.
Skip Same Email
Use this to skip if a user has received the same marketing email within the specified lookback minutes.
Skip Any Email
Use this to skip if a user has received any marketing emails within the specified lookback minutes.