In the US and European market, this was seen as a bare minimum level of professionalism and validation (other markets are more advanced on this front and have been on chat apps for the entire business for at least a decade)
regardless for email, I had been using Google workplaces for this
What’s a cheaper alternative? last time I tried something else I found I was vendor locked to google even when trying to accept calendar invites from people in other organizations that sent google calendar. That was 5 years ago though
some sectors like web3 let you do the whole project with just a username on discord/telegram/x but I do want to consider migrating my emails away from google workspace now. Its difficult to manage even changing the credit cards on file with so many projects like if one expires