Harvest allows you to create invoices based on tracked time and expenses from your projects, but it doesn't automate milestone-based billing. You'll need to pull in the relevant items manually.
Yes, Harvest integrates with tools like Asana and Slack, allowing you to track time spent on projects and easily invoice clients for that time.
Harvest supports invoicing in different currencies, but each invoice can only use one currency. You cannot mix multiple currencies within the same invoice.
You can customize your invoices in Harvest to show detailed breakdowns of billable hours and expenses, giving clients transparency into what they're being charged for.
Harvest offers automated email reminders for overdue invoices, helping to ensure your clients pay on time.
One limitation is that Harvest does not support bulk UBL export; you can only export one UBL invoice at a time.