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domain	postmarkapp.com
summary	The `TestMailer` email class, part of the ActionMailer framework, demonstrates how to send an email using Postmark. It constructs a `PostmarkMessage` with a `From` address (`senderexample.com`), a `To` address (`receiverexample.com`), a subject (`Hello from Postmark`), and an HTML body (` dear Postmark user.`). It enables tracking email opens (`track_opens: true`) and includes a sample request for creating the `PostmarkMessage` object. The email also includes a plain text body, a `ReplyTo` address (`replyexample.com`), and a custom header (`CUSTOM-HEADER`) for demonstration purposes.
title	Postmark: Fast, Reliable Email Delivery Service \| SMTP \| API
description	Send transactional and marketing emails and get them to the inbox on time, every time. Postmark is a fast and reliable email delivery service for developers.
keywords	postmark, email, support, emails, hello, service, more, delivery, great, message, startups, help, https, dear, streams, guides, start
upstreams	activecampaign.com, activehosted.com, joinmastodon.org
downstreams	dmarcdigests.com, twitter.com, activecampaign.com
nslookup	A 94.247.142.1
created	2024-02-13
updated	2026-01-28
summarized	2026-01-31