You can run a serious business from a free mail address. Plenty of people do. The problem is that the person receiving your quotation does not know that yet, and the address is the first thing they read.
What the address is actually saying
An address at a free provider tells a stranger one of two things: either the business is very new, or nobody has invested in it. Neither is what you want a buyer thinking while they read your price.
An address at your own domain says the opposite without a word. This company owns something, and it intends to be here next year.
What changes in practice
- Quotations and invoices look like they came from a company, not a person
- Every employee address reinforces one name instead of scattering it
- You keep the mailbox if a staff member leaves, because you own the domain
- Delivery problems are easier to fix, because the sending reputation is yours
The part most people miss
Free mail is not free of cost. It is free of ownership. If the account is ever locked, recovered by someone else, or closed, every conversation and every client contact inside it goes with it. On your own domain, that mailbox belongs to the business.
If you own the domain, you own the mailbox.
Business email sits alongside hosting on most plans, so this is usually a small step rather than a project. You can see how it is set up on the hosting plans page, or ask a question first.
In short: the address is part of the offer. Fixing it is one of the cheapest credibility upgrades available to a small business.