The Buzzmark blog
Notes on deliverability, transactional email, EU data and building a product company in the open.
The Buzzmark Team
A Pre-Flight Checklist for Your First Production Email
Before you flip the switch on real mail to real users, run through this. Ten checks that catch the mistakes that otherwise turn into spam-foldered launches and 2 a.m. debugging.
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Retries, Rate Limits, and Queues: What Happens After You Hit Send
"Send" doesn't mean "delivered." Between your app and the inbox sits a queue, a set of retry rules, and the receiving server's rate limits. Knowing what happens in that gap makes you a calmer, better sender.
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Open and Click Tracking: What It Tells You, and What It Costs
Tracking opens and clicks gives you engagement data — but it adds a pixel, rewrites your links, and raises privacy questions. When it's worth it, when to turn it off, and why the answer differs by mail stream.
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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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