Custom email subject line, body text
I like sending out invoices from Gmail, but would like it even more if there was a way to change the default subject line and email body text. Is there a way to do this? Even better if there was a way to change the text using some of the info from the invoice itself (like the info below the word "Invoice" where I put the project name for the client).
If this isn't a thing, I'll add this to the other discussion thread to suggest improvements.