Hi @nambirajanks
Thank you for posting such a great question in the Klaviyo Community!
Before I provide my suggested reasoning behind the delay, I do just want to make sure you are aware that the timeframe can be updated / managed by you to a desired delay that best suits your customers 😊
My thoughts behind the 1day delay in sending a Thank You email to your customers, is to ensure that it does not get missed or buried by other emails. As such, that the messaging inside this email is received by your customer and read.
Depending on the particular customer journey and your other email flows already in place, a customer could potentially be getting a Welcome Series email flow, and once an order is submitted an Order Confirmation and this could be within the same day. Each and every email is important and we want our customers to read them and take in the content, as well as feel informed and establish relationship and build loyalty and retention.
If the customer is flooded with emails from the start, this maybe overwhelming and important messaging missed. Hence the spread of information.
Of course, A/B Testing would be a great way to test the best time to send your Thank You email to your customer base.
I would be keen to hear what others in the Community
Hope this provides some insight!
Kylie