What should we do with 6000 customer records on Day 1 in Klaviyo??
We are just beginning with email marketing, and chose Klaviyo with integration with Shopify. We have never used any platform to email customers except MS Outlook. Over the past 16 years, we’ve collected 7000 customer records, most with the essential information including first name, second name, email address and mobile phone number. These were collected on paper, from receiving emails, from customers buying within Shopify, from legacy laybys, from phone enquiries, and over the counter. Therefore, none of these contacts have ever consented to receiving marketing contact by any means, but all engaged with us and gave their details so that we could contact them to resolve their particular issue.
We have created two Lists based on SMS and Email opt-in customers. We were considering importing all contacts with an email (5000) into the email List, and all contacts with a mobile phone (4000) into the SMS List. Clearly some exist in both. To do this, we would be manually opting them ALL into marketing by setting those values to TRUE, them importing into each list from CSV. Our plan was to email and SMS our databases to say “Welcome … would you like to continue receiving marketing communications from us?” The objective is to let them all know they can be included, and give them all a very clear opportunity to opt-out.
- Is this a bad idea?
- Will so many opt-outs in a short time frame hurt our deliverability?
- Is there a better idea given that much of this data will be old … perhaps 20-30%
I’m determined to get a ‘clean’ list, but rather than starting from ZERO, we thought this would be an ethical and honest way to begin.




