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engineering technical

Why We Built DexcyJet on Elixir and Phoenix — An Email Platform Engineering Perspective

The technical case for Elixir and Phoenix as an email platform foundation — concurrency via the BEAM, fault tolerance, real-time LiveView, and the specific architecture choices DexcyJet made.

Aakash Rao

Mar 20, 2026 · 9 min read

technical engineering

Webhooks vs Polling for Email Events: Why Webhooks Win

Webhooks vs polling for email delivery events — the technical case for webhooks, HMAC-SHA256 signature verification, retry strategies, and the Elixir pattern DexcyJet uses internally.

Aakash Rao

Mar 09, 2026 · 8 min read

technical engineering

Postgres Row-Level Security for Multi-Tenant SaaS: The Pattern We Use at DexcyJet

How to implement Postgres Row-Level Security for multi-tenant SaaS — the exact with_admin role, FORCE RLS, and GUC propagation pattern used in DexcyJet, with Elixir/Ecto code examples.

Aakash Rao

Feb 16, 2026 · 8 min read

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