Up-sell and cross-sell your services

You can also use thank-you emails to promote purchase-related products and services. Just ensure to keep any sales-related sections within your emails short. For example,

Thank you for payment, [client name].

I really appreciate your continuing business.

I also wanted to let you know that you can get [additional services] that will make your experience with [current order] even better.

Kind regards,

[your name]