Dear [name],
We are excited to announce that, due to our remarkable growth over the last [enter number] of years, we are expanding!
In fact, we are opening a new store in [enter location and specifics].
We invite you to celebrate with us during the big opening day on [enter date]. There will be many exciting surprises, including irresistible discounts.
[Add specific CTA depending on your specific offer, in this example -] If you want to make use of your opening day discount, please click on the button below so we can send you the discount code.
See you there.
Team [name of your brand]