💡 [Feature Request] - <When submitting an invoice automatically attach a pdf to an e-mail of customer>

[CornishWoodsman]

Summary

When submitting an invoice automatically attach a pdf to an e-mail of customer

What problem are you trying to solve?

Avoiding saving as pdf then attaching and writing e-mail address again

Basic Example

Instead of just submit another option could be to submit and e-mail

Drawbacks

I don't see any obvious drawbacks

Reference Issues

No response