Get a text when a hubspot invoice gets paid?

set the trigger to status is equal to Paid specifically. if you use "has changed" or "is known" you'll get a text every time someone edits the invoice. test it with a small invoice paid to yourself before you rely on it.

If your plan has workflows that can use invoices as the object, make one that triggers when the invoice status becomes paid and add a send internal SMS or internal notification step. Not every tier has invoice-based workflows though. If yours doesn't, a Zapier or Make zap watching for paid invoices and texting you does the same job.