Free but very responsive customer service. Takes reliability seriously.

ImprovMX is the fastest and best mail forwarding plugin and service I have found. It is simple efficient and super easy to use.

I'm a free tier-to-paid customer of ImprovMX. Functions flawlessly. I have 8 Google accounts for different domains, and there's a point at which you reach a saturation point with the number of accounts you have to toggle between (thank goodness for Chrome Profiles!) But with aliases, ImprovMX helps you save time and cost, ESPECIALLY for new projects where you need to spin up a new domain and maybe put your whole staff on it, but you're not sure you want to get an entire new GSuite and pay per user. Complete flexibility and easy setup. Yes, there is a free tier for a single domain, but please remember to support developers and pay for services like this that are important to your business. They're a business, just like you. I do a lot of work in the nonprofit space, so I know about lean, minimal budgets.