Being a professional service provider, you might fall in a scenario when some critical mistake being committed by you or your company brings criticism and complaints from the clients. You have to adhere to all such emails positively and if you see you really are at fault, you better accept your mistake in front of the client. A service apology email depicts your true professionalism and can be very beneficial for your future relations with other the clients.
Begin your email by apologising your client right away. Tell the client that you are immensely sorry about the inconvenience you cased to him/her in the opening few lines of your email.
You have to accept your mistake openly and explain the causes of the mistake to the client. Don’t try to be defensive in the email, as this will give an expression to the client that you are avoiding to accept the blame.
In the next paragraph, you can offer any reparations for the inconvenience you caused to the client. Offer your apology once again to the client and express your hopes of carrying on a healthy professional relationship in the future.