We got tired of parking client lists in tools we do not control. Sumezi is the boring answer: newsletters, lists and automations on the same foundation as the rest of the ecosystem.
Identity comes from Simezu. Content and routing lean on Modular. Where copy needs a draft or a summary, Soriku can help. The list itself stays on servers we can point to.
It is not trying to beat every feature of the big mailing platforms. It is trying to be good enough that we stop exporting CSVs at midnight.