Have SeatLess build it and hand it over
SeatLess has said publicly that hosting after a build is about $50 a month, or free if you self-host. That figure is their claim, not a quote. Ask.
Deploy SeatLess Mail
Email sending built for your lists, without a contact tax.
Done for you by SeatLess
SeatLess installs this and hands the system over. Price is quoted per project. This does not pin the app above higher scores.