PYRX Synapse
Events, contacts, and email in one workspace — so product and growth teams stop stitching three vendors together.
Live product · Free tier available — no credit card
One workspace for events, contacts, and email
Synapse is PYRX's customer communications platform. It brings event tracking, contact data, and transactional email into a single API and workspace — so engineering and growth teams can ship lifecycle messaging without a glue layer between three separate vendors. It's built API-first for developers, with a visual flow builder and plain-English templates for the non-technical teammates who operate it every day.
Everything a small team needs to ship lifecycle messaging
Authoring, automation, quality, and infrastructure — built into one workspace your engineering and growth teams share.
Smart Suggester & NLT
Visual template authoring with a plain-English templating language — Jinja is supported too, for teams that prefer it.
Event-Driven Flows
Trigger lifecycle messages from real product events, with segment-based entry, branching, and idempotency guards built in.
Synapse Inspect
A multi-stage email quality pipeline that catches rendering, accessibility, and deliverability issues before a send goes out.
Production-Grade Infrastructure
Row-level tenant isolation, scoped API keys, RBAC, and test/live environment separation — included on every plan.
Built for teams that want to own their customer data
- 8 server SDKs — Node.js, Python, Browser, Go, Java, .NET, Ruby, PHP
- Postgres row-level tenant isolation on every business table
- Test and live environments separated on every plan, including Free
- Visual flow builder with event, scheduled, periodic, and flow-exit triggers
- Free tier — no credit card required
Free tier available, with paid plans for teams that need higher volume or advanced analytics.
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Who is Synapse for?
Product, engineering, and growth teams who want one workspace for customer events, contact data, and transactional email. It's developer-first, with a visual dashboard and plain-English templates for the marketing and operations teammates who run it day to day.
How does Synapse fit into the PYRX portfolio?
Synapse is one of PYRX's flagship in-house products, alongside AI Lecturer and Call Analyzer. It runs as a live SaaS at synapse.pyrx.tech, with its own marketing site, docs, and signup. We use the same platform internally — what we ship to customers is what we use ourselves.
How do I start?
Self-serve teams can create a free account directly at synapse.pyrx.tech. For agencies, enterprises, or teams looking at Synapse alongside a wider engagement with PYRX, talk to our team — we'll scope the right plan and integration path with you.
Ready to consolidate your customer communications?
Try Synapse for free, or talk to our team about a tailored rollout.