Fork from Keighl's Postmark (A Golang package for the using Postmark API)

go get -u github.com/mrz1836/postmark

Grab your Server Token, and your Account Token.

package main

import (
	"context"

	"github.com/mrz1836/postmark"
)

func main() {
	client := postmark.NewClient("[SERVER-TOKEN]", "[ACCOUNT-TOKEN]")

	email := postmark.Email{
		From:       "[email protected]",
		To:         "[email protected]",
		Subject:    "Reset your password",
		HTMLBody:   "...",
		TextBody:   "...",
		Tag:        "pw-reset",
		TrackOpens: true,
	}

	_, err := client.SendEmail(context.Background(), email)
	if err != nil {
		panic(err)
	}
}

Swap out HTTPClient for use on Google App Engine:

package main

import (
    "github.com/mrz1836/postmark"
    "google.golang.org/appengine"
    "google.golang.org/appengine/urlfetch"
)

// ....

client := postmark.NewClient("[SERVER-TOKEN]", "[ACCOUNT-TOKEN]")

ctx := appengine.NewContext(req)
client.HTTPClient = urlfetch.Client(ctx)

// ...

• Emails
  • POST /email
  • POST /email/batch
  • POST /email/withTemplate
  • POST /email/batchWithTemplates
• Bounces
  • GET /deliverystats
  • GET /bounces
  • GET /bounces/:id
  • GET /bounces/:id/dump
  • PUT /bounces/:id/activate
  • GET /bounces/tags
• Templates
  • GET /templates
  • POST /templates
  • GET /templates/:id
  • PUT /templates/:id
  • DELETE /templates/:id
  • POST /templates/validate
• Suppressions
  • GET /suppressions/dump
  • POST /suppressions
  • POST /suppressions/delete
• Servers
  • GET /servers/:id
  • PUT /servers/:id
• Outbound Messages
  • GET /messages/outbound
  • GET /messages/outbound/:id/details
  • GET /messages/outbound/:id/dump
  • GET /messages/outbound/opens
  • GET /messages/outbound/opens/:id
• Inbound Messages
  • GET /messages/inbound
  • GET /messages/inbound/:id/details
  • PUT /messages/inbound/:id/bypass
  • PUT /messages/inbound/:id/retry
• Message Streams
  • GET /message-streams
  • POST /message-streams
  • GET /message-streams/{stream_ID}
  • PATCH /message-streams/{stream_ID}
  • POST /message-streams/{stream_ID}/archive
  • POST /message-streams/{stream_ID}/unarchive
• Sender signatures
  • GET /senders
  • Get a sender signature’s details
  • Create a signature
  • Edit a signature
  • Delete a signature
  • Resend a confirmation
  • Verify an SPF record
  • Request a new DKIM
• Stats
  • GET /stats/outbound
  • GET /stats/outbound/sends
  • GET /stats/outbound/bounces
  • GET /stats/outbound/spam
  • GET /stats/outbound/tracked
  • GET /stats/outbound/opens
  • GET /stats/outbound/platform
  • Get email client usage
  • Get email read times
• Triggers
  • Tags triggers
    • Create a trigger for a tag
    • Get a single trigger
    • Edit a single trigger
    • Delete a single trigger
    • Search triggers
  • Inbound rules triggers
    • Create a trigger for inbound rule
    • Delete a single trigger
    • List triggers
• Webhooks
  • List webhooks
  • Get webhooks
  • Create webhooks
  • Edit webhooks
  • Delete webhooks