Website link to my invoice system

I am rebuilding my website and would like to add a link to allow my customers to click on then they can sign in to view there invoices and estimates in the quickfile system. The trouble is how can i provide a central log in link to use from my website or if i have one what would it be?
thank you

The link would be your Quick File domain e.g:

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@Glenn has shown the easiest way, but if like me you want to provide a ‘one log in’ solution, you’re best bet is the API.

If you can, keep a record of QuickFile IDs in your own database (again, the API can help you with this - see and

The API provides a pre log in function which you can use (see

Hope this helps :smile: