Probably. This depends very much on your own processes.
As one of our solutions we offer a BCC link. For this BCC link we make a personalized e-mail address on our server which you can include in your ordering process as BCC. When you mail your customer the invoice we will receive a trigger. This trigger includes the customer’s e-mail address. After a set number of days the customer will receive their invitation.
If setting up this connection isn’t an option it is possible to request the e-mail address after the end of a job. With our manual invitation tool, you can easily send an email every week / 2 weeks.