Blog
6 posts tagged with "technical".
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
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
An honest email API comparison of SendGrid, Mailgun, and Postmark — pricing, developer experience, deliverability, and where DexcyJet's multi-provider abstraction layer fits in the picture.
Aakash Rao
Mar 06, 2026 · 6 min read
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
The real differences between transactional and marketing email — why they need separate IPs and sending domains, how sender reputation works, and how to structure your email infrastructure.
Aakash Rao
Jan 30, 2026 · 5 min read
Learn how to set up SPF, DKIM, and DMARC DNS records correctly, verify them with command-line tools, and understand what each protocol actually does for your sender reputation.
Aakash Rao
Jan 15, 2026 · 7 min read