
The short answer
Send every invoice, statement and payment follow-up from a shared billing address on your own domain, such as accounts@youragency.com, and send it to your client’s accounts payable inbox rather than your project contact. Accounts payable gets a stable address for your supplier record, money conversations move out of the client relationship thread, and somebody other than the founder can own the payment work without anything changing on the client’s side.
The setup, in order:
Create the address as a shared mailbox or group.
Point your invoicing software’s sender and reply-to at it.
Authenticate your domain so invoices are not filtered as spam.
Update the contact email on each client’s supplier record.
Decide who reads it, and when.
The last step is the one that gets skipped, and it is the one that decides whether the rest works.
What goes wrong when invoices come from you
An invoice sent from the founder’s address to a project contact takes the longest route available. The contact receives it alongside feedback on the latest round of work, forwards it to finance when they remember, and the forward arrives without the purchase order number or the approval it needs. That is how an uncontested invoice ends up parked, which is the first of the 7 reasons clients pay late.
Replies go astray too. When accounts payable has a question, it goes back to whoever sent the invoice. If that is the founder, the question lands between a pitch and a client call and waits for a quiet hour that does not come.
The two conversations also get tangled. Asking a client for a payment date from the same address, in the same thread where you discussed their launch yesterday, puts the relationship and the money in one message. A separate address is the cheapest way to separate the roles, and it is what makes it possible for someone other than you to own follow-up.
What accounts payable does with your address
Clients with a finance function set you up as a supplier before they can pay you. The supplier record holds your legal name, bank details, tax information and a contact email, and accounts payable uses that email for remittance advice and invoice queries. Most AP teams also have their own address that invoices must be sent to, and it is rarely your project contact’s.
A shared address keeps that record correct when people change at your end. With the founder’s personal address on it, every remittance advice and every query goes to one person’s inbox for as long as the record exists.
Ask for the client’s AP address at signature, in the same email where you confirm the purchase order. It is one line in the kickoff email and saves a month of forwarding later.
How to set it up
1. Create the address
In Google Workspace, a Google Group with the collaborative inbox feature lets several people read and reply from one address. In Microsoft 365, a shared mailbox does the same job and does not need its own paid licence for ordinary use. A plain alias forwarding to your own inbox works for a one-person agency, but it loses the separation that makes the address worth having, so treat it as temporary.
2. Point your invoicing software at it
Invoicing and accounting tools let you set the sender name and the reply-to address on invoice emails. Set both to the billing address, so a client replying to an invoice reaches accounts@ rather than a no-reply mailbox or the founder.
3. Authenticate your domain
If your invoicing software sends email on your behalf, add the SPF and DKIM records it gives you to your domain. Without them, an invoice sent “from” your domain by someone else’s mail server is more likely to be filtered by the client’s mail system, and nobody tells you it happened. The tool’s help pages list the exact records.
4. Update every client’s supplier record
Email each active client’s AP team once, from the new address, with your supplier details and a request to update the contact email. Keep it to 4 lines. From then on, send invoices to their AP inbox and copy your project contact if they want visibility.
5. Decide who reads it
An unread billing address is worse than the founder’s inbox, because at least the founder sees their own email. Name one person, give them a fixed time each day to check it, and keep the follow-up schedule alongside it. If that person works outside the company, give them access to the shared mailbox rather than setting up a forward.
accounts@, billing@ or invoices@?
Using one address consistently matters more than which word you pick. accounts@ tends to be the convention in the UK and Australia, and billing@ or ar@ are more familiar to US finance teams. invoices@ reads as receive-only, which suits a client’s AP team and sits oddly on yours, because you want replies.
Avoid finance@ if you might one day separate paying your own suppliers from billing your clients. You will end up needing two addresses, and changing the one on every client record twice is the job you were trying to avoid.
What it costs
Very little in money. A shared mailbox or collaborative inbox is included in most business email plans. The real cost is the one-off email to every client and the discipline of reading the address every day.
The risk worth naming is the changeover month, when some clients still reply to the founder and some reply to accounts@. Check both for a few weeks rather than assuming the switch has taken. The payment operations wiki has the full accounts@ setup alongside the escalation ladder and templates, and the follow-up email templates work unchanged from the new address.
FAQ
What email address should invoices be sent from?
A shared billing address on your own domain, such as accounts@ or billing@, rather than a personal inbox or a no-reply address. It stays on your client’s supplier record when people change at your end, and replies about the invoice reach whoever owns payment.
Who should I send an invoice to?
Your client’s accounts payable inbox. Most clients with a finance team have one and will give it to you on request. Copy your project contact if they need to see the invoice, but send it to the people who process it.
Is a shared mailbox free?
In Microsoft 365, a shared mailbox does not need its own paid licence for ordinary use. In Google Workspace, a Google Group set up as a collaborative inbox is included in the plan. Check your provider’s current limits before relying on either.
Why do invoices end up in the client’s spam folder?
Usually because invoicing software sends them from your domain without SPF and DKIM set up for that software, so the client’s mail system cannot confirm the sender. Adding the records your invoicing tool provides fixes most cases.
Can someone outside my company use our accounts@ address?
Yes, and that is one of the main reasons to set it up. A bookkeeper or a fractional payment operations owner can be given access to the shared mailbox and work the payment thread from your domain, so nothing changes from the client’s side.