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Email best practices and industry news.
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Past Issues

February 2026 🦞Is that AI assistant safe to run?🦞 (Plus what we shipped this month)
October 2025 [Postmark Newsletter] New docs search, a customer story worth reading, and important API security trends
September 2025 [Postmark Newsletter] MS Research, Gemini in Chrome, S3 Vectors vs. databases, and more!
August 2025 Recent pricing changes, AI prompt injection game + real customer magic ✨ (August newsletter)
July 2025 We're back! (And we've been busy building some pretty cool stuff)
April 2024 Send more effective emails, why latency is broken, and histograms! 📊
March 2024 Unpacking list-unsubscribe headers, stay focused, & hear an original yodel 🎶
February 2024 DMARC and friends + can you spot the lizard?🦎
January 2024 Email advice from a founder, Postmark community highlights, and how to automate an office disco
December 2023 The history of SMTP, integrating Postmark with Nest.js, and a visit from a lizard
November 2023 Getting into deep focus, Postmark + Mastodon, and proven tips for growing a healthy email list
July 2023 Building something new, using Inbound and AI, serving our support team
June 2023 Data quality, marketing automation, and an under-appreciated feline
April 2023 TLD operators, API calls, and some authentically cute pets
March 2023 Plain-text emails, friendly vs. formal tone, and a must-buy printer
February 2023 ChatGPT & other spam traps, the Status API, and some lovely tunes
January 2023 Writing readable code, sending emails fast, and EEAAO
December 2022 The 2022 Postmark awards
September 2022 Transactional 🤝 marketing email
August 2022 What a hoot!
July 2022 Getting customers to stick around 🍯 🐝
May 2022 Happy birthday! 🎂
March 2022 How we increased Postmark’s sending capacity
January 2022 SPF isn't just for sunscreen
November 2021 Friends don’t let friends pay a fortune for dedicated IPs
July 2021 Introducing Sandbox Mode
May 2021 This newsletter is about a lot of things we love
April 2021 Are you separating your promotional and transactional email?
March 2021 Craft plugin and SMTP Field Manual updates, plus a bunch of Message Streams news
October 2020 This is 20!
September 2020 Get early access to our Message Streams feature to send all your application email through Postmark
May 2020 An update on Message Streams, and introducing two new products
February 2020 Help us support your favorite content
December 2019 Join our upcoming webinar, get prepared for upcoming changes to SMTP sending, and more
November 2019 SMTP Field Manual on Product Hunt
October 2019 Postmark Pizza Party is back! Let us sponsor your meetup.
September 2019 Say hello to our very first podcast!
August 2019 Sneak preview: we’re launching a podcast!
July 2019 Tips for accessibility, introducing Postmark Layouts, and more
June 2019 Introducing the Postmark CLI Tool, and more
May 2019 Let us support your next meetup, send us your feedback on AMP for Gmail, and more
April 2019 Catch up on our domain reputation webinar, and more
March 2019 Wildbit’s latest developer product, and a bunch of Postmark news
February 2019 Postmark for iOS v1.2.0 released, and more
January 2019 New! Easier template management across environments
December 2018 Dedicated IPs, a WordPress plugin update, and an interview with the founder of Brightpod
November 2018 Paid writing opportunity, how to send more effective emails, and a big update to the JS library
October 2018 How email clients process HTML, Adobe’s 2018 email survey results, and say hello to our customer success team
September 2018 How to protect your app, an update to Postmark for iOS, and a brand new Servers page
August 2018 Brand new email guides, an update to the Friends & Family discount, and a request for input
July 2018 The state of transactional email, friends & family discount, and lots of new features
June 2018 Postmark for iOS, a bunch of helpful startup tips, and another great customer interview
May 2018 New email authentication method, tips for email coding, and an interview about HTML templates
April 2018 Modular webhooks, 30% off “HTML Email” templates, and a very insightful customer interview
March 2018 Google's new interactive email effort, how to get ready for GDPR, and more.
February 2018 The elements of a good email, hack week projects, and maybe a meetup in your city
December 2017 Email resources, helpful Postmark tips, and the right way to brew Aeropress
November 2017 Better technical documentation, ticket giveaway, and link tracking enhancements
October 2017 2017 email stats, how to check spam scores, and some crazy airplane videos
September 2017 How to deal with unsubscribe emails, and introducing our new support center
August 2017 Testing your email, how to join our design process, and Jonnie Hallman interview
July 2017 Email translation tips, DMARC report updates, and our team's side projects
June 2017 💌 Tips for better subject lines, useful tools, and Wes Bos interview
May 2017 We'll be on the road in 2017 and would love to see you