postmarkapp.comPostmark: Fast, Reliable Email Delivery Service | SMTP | API

Set up DMARC and see who’s sending email using your brand’s domain. Try DMARC Digests today → x Postmark Log In Why Postmark? Product Features Email API SMTP Service Message Streams Transactional Email Email Delivery Email Templates Inbound Email Analytics & Retention Integrations Postmark For Agencies Enterprise Startups Bootstrapped Startups Side Projects Postmark vs. SendGrid Mailgun Amazon SES SparkPost Mandrill Pricing Resources Blog API Documentation Getting Started Email Guides Email Comic Webinars Videos Podcast Labs DMARC Digests Glossary Help Support Center Contact Support Talk to Sales Status Log in Start free trial Why Postmark? Product Features Email API SMTP Service Message Streams Transactional Email Email Delivery Email Templates Inbound Email Analytics & Retention Integrations Postmark For Agencies Enterprise Startups Bootstrapped Startups Side Projects Postmark vs. SendGrid Mailgun Amazon SES SparkPost Mandrill Pricing Resources Blog API Documentation Getting Started Email Guides Email Comic Webinars Videos Podcast Labs DMARC Digests Glossary Help Support Center Contact Support Talk to Sales Status Log in Start free trial Start free trial Already have an account? Log in → I’ve had great success with @postmarkapp and the API is solid as gold. – Tyson Lawrie Ripped out Sendgrid and moved Growform’s transactional emails over to @postmarkapp today. Their app is ridiculously easy to use, they have a clear focus on deliverability and great docs. Highly recommend so far. – Harvey Carpenter Just tried out @postmarkapp and boy is it blazing fast. Transactional emails that previously took 5-10s to reach my inbox with Mailgun are now hitting my inbox in less than 1s. 11/10 would recommend. – Steven Tey I just implemented @postmarkapp in like 5 minutes. Email received in Yahoo in seconds. I am sold. – Lola I have nothing but huge love for Postmark, one of my heroes in the bootstrapped world. – Anna Maste Spent the weekend shifting @SeshMysteries across from SendGrid to @postmarkapp and couldn’t be happier with the experience so far ✨? – Dan Foster Sendgrid = Frustration Postmark = ? – Mike Verbruggen I’ve been so impressed with @postmarkapp since migrating almost all Smart Order Notifications transactional email to them last month. The peace of mind is amazing and the responsiveness of their support team is next level. – Kieran Masterton Been a postmark customer for a veeeerry long time. Stability and deliverability is so good I sometimes go months without thinking about it… just works(tm). – Ben Webster I’ve had great success with @postmarkapp and the API is solid as gold. – Tyson Lawrie Ripped out Sendgrid and moved Growform’s transactional emails over to @postmarkapp today. Their app is ridiculously easy to use, they have a clear focus on deliverability and great docs. Highly recommend so far. – Harvey Carpenter Just tried out @postmarkapp and boy is it blazing fast. Transactional emails that previously took 5-10s to reach my inbox with Mailgun are now hitting my inbox in less than 1s. 11/10 would recommend. – Steven Tey I just implemented @postmarkapp in like 5 minutes. Email received in Yahoo in seconds. I am sold. – Lola I have nothing but huge love for Postmark, one of my heroes in the bootstrapped world. – Anna Maste Spent the weekend shifting @SeshMysteries across from SendGrid to @postmarkapp and couldn’t be happier with the experience so far ✨? – Dan Foster Sendgrid = Frustration Postmark = ? – Mike Verbruggen I’ve been so impressed with @postmarkapp since migrating almost all Smart Order Notifications transactional email to them last month. The peace of mind is amazing and the responsiveness of their support team is next level. – Kieran Masterton Been a postmark customer for a veeeerry long time. Stability and deliverability is so good I sometimes go months without thinking about it… just works(tm). – Ben Webster The email delivery service that people actually like Stop worrying if your emails made it to the inbox, and get back to focusing on what matters—building great products. Start free trial API documentation → Since 2010, we’ve delivered billions of emails for companies of all sizes Paddle Indie Hackers Faire.com IKEA litmus desk minecraft livestream UNICEF Asana Moz Code Climate LiveChat 1Password Wistia Betterment Webflow InVision Start sending in minutes With API libraries for pretty much every programming language you can think of, Postmark fits seamlessly into any stack. More # Send an email with curl # Copy and paste this into terminal curl "https://api.postmarkapp.com/email" \ -X POST \ -H "Accept: application/json" \ -H "Content-Type: application/json" \ -H "X-Postmark-Server-Token: server token" \ -d ’{ "From": "sender@example.com", "To": "receiver@example.com", "Subject": "Postmark test", "TextBody": "Hello dear Postmark user.", "HtmlBody": "htmlbodystrongHello/strong dear Postmark user./body/html", "MessageStream": "outbound" }’ # Send an email with the Postmark Rails Gem # Learn more - https://postmarkapp.com/developer/integration/official-libraries#rails-gem # Add this to your gemfile gem ’postmark-rails’ # Add this to your config/application.rb file: config.action_mailer.delivery_method = :postmark config.action_mailer.postmark_settings = { :api_token = "POSTMARK_API_TEST" } # Send the email class TestMailerActionMailer::Base def hello mail( :subject = ’Hello from Postmark’, :to = ’receiver@example.com’, :from = ’sender@example.com’, :html_body = ’strongHello/strong dear Postmark user.’, :track_opens = ’true’ ) end end # Send an email with the Postmark Ruby Gem # Learn more - https://postmarkapp.com/developer/integration/official-libraries#ruby-gem # Add the Postmark Ruby Gem to your Gemfile gem ’postmark’ # Require gem require ’postmark’ # Create an instance of Postmark::ApiClient client = Postmark::ApiClient.new(’POSTMARK_API_TEST’) # Example request client.deliver( from: ’sender@example.com’, to: ’receiver@example.com’, subject: ’Hello from Postmark’, html_body: ’strongHello/strong dear Postmark user.’, track_opens: true ) // Send an email with the Postmark .NET library // Learn more - https://postmarkapp.com/developer/integration/official-libraries#dot-net // Install with NuGet PM Install-Package Postmark // Import using PostmarkDotNet; // Example request PostmarkMessage message = new PostmarkMessage { From = "sender@example.com", To = "receiver@example.com", Subject = "Hello from Postmark", HtmlBody = "strongHello/strong dear Postmark user.", TextBody = "Hello dear postmark user.", ReplyTo = "reply@example.com", TrackOpens = true, Headers = new NameValueCollection {{ "CUSTOM-HEADER", "value" }} }; PostmarkClient client = new PostmarkClient("POSTMARK_API_TEST"); PostmarkResponse response = client.SendMessage(message); if(response.Status != PostmarkStatus.Success) { Console.WriteLine("Response was: " + response.Message); } // Send an email with the Postmark-PHP library // Learn more - https://postmarkapp.com/developer/integration/official-libraries#php // Install with composer composer require wildbit/postmark-php // Import use Postmark\PostmarkClient; // Example request $client = new PostmarkClient("server token"); $sendResult = $client-sendEmail( "sender@example.com", "receiver@example.com", "Hello from Postmark!", "This is just a friendly ’hello’ from your friends at Postmark." ); // Send an email with the Postmark.js library // Learn more - https://postmarkapp.com/developer/integration/official-libraries#node-js // Install with npm npm install postmark save // Require var postmark = require("postmark"); // Example request var client = new postmark.ServerClient("server token"); client.sendEmail({ "From": "sender@example.com", "To": "receiver@example.com", "Subject": "Test", "TextBody": "Hello from Postmark!" }); Switching to Postmark? Check out our handy migration guides I’m switching from I’m switching from… SendGrid Mailgun Amazon SES SparkPost Mailchimp Transactional Stellar deliverability (without...