Batch Email Invoice Work Around

Apologies for hounding this forum on this topic, but I feel I am very close to solving it and hopefully it would be able to help other people in the future if I can get it figured out.

Goal: Email almost 100 selected invoices to my email, from there I download and zip them and send to the customer who requested them.

I'm pretty much have two routes that I have gone down:

1) I have my saved searched of all the invoices I need. I have the work flow that grabs the saved search and then have the action to send email- to my own email (where I will download the attached invoices and compile them into zips for ease of the customer). My problem is that the workflow doesn't email me all the invoices,  it will only send me like 5 out of 75. Not sure what could be causing this? Both the saved search and Workflow are on transaction record type.