Ask One tool that helps you automate repetitive tasks in your business?

[Brendan]

I used to spend many hours every week doing the same small tasks over and over again, like sending invoices or replying to basic emails. Eventually, I realized that I could use simple programs to handle these boring jobs for me so that I can focus on my actual creative work. This saves me a lot of energy and allows me to finish my projects much sooner than before. Is there a specific tool you use to handle these repetitive parts of your freelance business?