Hey @zx_lim,
It looks like attaching the invoice directly inside Gmail isn't likely possible - the way I think you're thinking anyway. However, one solution could be to include a link to the invoice within the email itself–that would definitely work within Gmail’s setup. (
mailto:me@me.com?subject=Me&body=Text)
If you're set on having the invoice as an actual attachment, you’d need to go about building the email composer in Retool and send the email from there.
Also, just curious—how were you thinking of generating the invoices? There are a few ways you could approach that, so I’d be happy to help explore options depending on your needs. Let me know! 