So sorry for your loss. I think you should be able to optimise your marketing costs further down.
I recommend you take a look at Spreeflo for email automation. Spreeflo looks at your customer segments and prepares hyper-personalised marketing emails for your customers. Every email is uniquely crafted for the customer by the app. It’ll save you a lot of time but it’s also constantly be working in the background to help acquire new sales from your existing customers. It includes abandoned cart recovery, brand promotion, product recommendations, and discount code emails. I just spend several minutes on the app to review the generated email copies every day and am able to dispatch personalised emails to hundreds of customers.
It fulfils many of your marketing needs at an affordable price.