Creating and managing app emails can be a tricky business. We’ve developed a number of free services and open source tools that make working with email more enjoyable.
A free tool to monitor & implement DMARC.
dmarc.postmarkapp.com
Instantly check the spam score of your email messages.
spamcheck.postmarkapp.com
A Slack App to receive Bounce notifications and other information from Postmark
postmarkapp.com/slack-app
Troubleshoot and resolve common delivery issues from your iPhone and iPad.
postmarkapp.com/ios
A nifty integration that lets your customers know about delivery issues straight from your web app.
postmarkapp.com/rebound
A collection of SMTP error codes from major inbox providers.
smtpfieldmanual.com
Push and pull templates, send emails, and fetch server lists from the command line.
github.com/activecampaign/postmark-cli
A complete toolset to streamline building and updating a set of consistent transactional emails.
postmarkapp.com/mailmason
MailBrush lets you add syntax highlighting to code snippets so they can be used in your email templates.
github.com/activecampaign/mailbrush
Simple lightweight mail library which allows you to send and retrieve emails, and get more details about email sending and delivery.
github.com/activecampaign/mailhandler
Rock-solid email templates for applications.
postmarkapp.com/transactional-email-templates
Simple CSS inlining, for email, for C# and other .net-based languages.
github.com/activecampaign/style-merge
A Lightweight, powerful, flavorful, templating engine for C# and other .net-based languages.
github.com/activecampaign/mustachio
Lightweight quickstart app for receiving and processing webhooks from Postmark.
github.com/activecampaign/postmark_webhooks/
Starter workflow for creating self-signed PDF agreements with node.js and express.
github.com/activecampaign/PactMaker
