At small volume, I'd worry less about infra than the list. A normal mailbox on your own domain, 10-20 a day, and only people who visibly have the problem right now, with one fact about them you can point to. If you can't find that fact, skip them.
It’s always been difficult to find something interesting to point out about an stranger. When I had a tool that made videos I requested the tool to make a video out of the profile picture and worked like magic, but how do you sell a database service for example? Do you need personalization for that? And what do you say, that you used Supabase as they likely do and had to change to your new db thing?
Yes - using senderpools.com that handles all the infra/sequencing. Starting out about 5,300 sends (2,900 prospects), 64 reply, 8 positive replys
Thanks for giving your stats. Copy? Also, what was your close rate? Did you use Apollo for the lead list?