Custom Email “From” Configuration

I use the standard webmail interface that came with my hosting plan and I want every message I send to show a custom “From” address tied to my own domain. This is for personal correspondence, so it doesn’t need complex marketing features, but it must look polished and work reliably... (Budget: ₹1500 - ₹12500 INR, Jobs: DNS, Email Marketing, HTML, PHP, Web Hosting)