The middle of the market
Encharge is interesting because it is not trying to be the biggest platform or the smallest email tool. It sits in the middle: enough automation depth for SaaS, but still approachable for a smaller team.
That makes the comparison with PostHog Workflows practical. The question is whether your flow should live where product events are measured or where SaaS marketing journeys are operated.
When PostHog Workflows wins
PostHog Workflows wins when the event is the whole point. If a cohort appears in PostHog and the team wants to act on it, building inside PostHog is clean.
When Encharge wins
Encharge wins when the workflow combines product behavior with billing, CRM, and marketing ownership. It is more natural for a marketer to open Encharge and think about a customer journey than to operate that journey inside analytics.
My recommendation
Use PostHog Workflows to test product-triggered actions. Move to Encharge when a marketer needs to own the flow. Move to Sequenzy when the flow is mostly SaaS email and transactional communication.