The Buzzmark blog
Practical writing on transactional email: deliverability, SPF/DKIM/DMARC, inbound mail, EU data rules and how Buzzmark is built.
Showing posts from May 2026 Show all
3 min read
Webhooks 101: Reacting to Deliveries, Bounces, and Opens in Real Time
Sending an email is only half the story. Webhooks tell your application what happened next — delivered, bounced, opened, complained — so you can react automatically instead of polling and guessing.
Read →2 min read
SMTP or API? Two Ways to Send with Buzzmark
You can hand mail to Buzzmark over classic SMTP or over an HTTP API. Both reach the same place; the right choice depends on your stack, your existing code, and how much control you want.
Read →2 min read
Return-Path, Envelope Sender, and Why Bounces Need a Home
There are two "from" addresses on every email, and most people only know about one. The hidden one — the Return-Path — is where bounces go and where SPF is checked. Here's why it matters.
Read →2 min read
Dedicated vs. Shared IPs: Which Do You Actually Need?
Dedicated IPs sound like the professional choice, but for most senders a shared IP is genuinely better. Here's how to tell which side of the line you're on.
Read →