What are some alternatives?
When comparing Mailbook and Brizy Cloud, you can also consider the following products
Ship - Fast, native issue tracking for software projects
Landing Pages in MailChimp - Easy to build, custom landing pages for free
Carrd - Simple, responsive one-page site creator.
Landing Pages by Viral Loops - Easily create a landing page for your referral campaign ✌️
Carrd Template Marketplace - Unofficial place for Carrd templates to build without code