When I use TimeSolv to send statements by email, the subject line is “Statement of Account from [Law Firm Name].” The subject line is the same for all statement emails for all clients. That is not the case with invoices; they include a unique invoice number and the specific client/matter information in the subject line. I use G Suite/Gmail and it associates all the emails sending statements together, because the subject line is the same, even though the emails are sent to different clients. Emailed invoices all stay separate because they have different subject lines, which makes organizing and saving them much easier.
How often would you use this request?
Whenever I send out statements, so probably every month.