The Buzzmark blog
Practical writing on transactional email: deliverability, SPF/DKIM/DMARC, inbound mail, EU data rules and how Buzzmark is built.
3 min read
Inbound Email Parsing: Turn Replies Into Structured Data
Email doesn't have to be a one-way street. Inbound parsing catches messages sent to your app, extracts what matters, and hands it to your code as data — powering reply-by-email, support pipelines, and more.
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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.
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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.
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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.
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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.
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DMARC: From p=none to Enforcement, Safely
Publishing a DMARC record is easy. Reaching an enforcement policy without accidentally blocking your own legitimate mail is the real work. Here's the staged path from monitoring to full protection.
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Suppression Lists: Your Quietest Deliverability Tool
A suppression list is the record of addresses you should never email again. It's unglamorous, it runs in the background, and it's one of the most important safeguards standing between you and a ruined sender reputation.
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The Anatomy of a Great Password-Reset Email
The humble password reset is the most-opened email your product sends, and often the most rushed. A short field guide to getting the details right, from subject line to link expiry.
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How to Warm Up a New Sending Domain
A brand-new domain has no reputation, and mailbox providers treat strangers with suspicion. Warming up — ramping volume gradually while keeping engagement high — is how you earn trust before it's too late.
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Hard Bounces vs. Soft Bounces: Reading the Signals
Not every bounce means the same thing. Telling a permanent failure apart from a temporary one — and reacting correctly to each — is one of the simplest ways to protect your sending reputation.
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