I maintain a curated database of over Literary Agents. Send me your pitch, bio, synopsis and manuscript in 'word' and I will prepare submissions to each of them, each in the required form( which varies between agents), load the submissions into the drafts folder of a new Gmail account and then hand over the account to you. You can then send out the submissions one at a time or in batches. It takes me on average 7 days and i charge a fixed fee of $300.