Chasing a friend or family member: email template

Hi [Client name],

Hope you're doing well! Just a quick one about the invoice for [Project] — [Amount] was due on [Due date].

I know it's a bit awkward mixing work and friendship, so I keep this side of things businesslike for everyone. Could you let me know when you're able to sort it?

Thanks so much — and [personal note].

[Your name]