When to Switch from Postmark to Aligned
Postmark has earned its reputation as a rock-solid choice for transactional email. Its focus on deliverability, speed, and ease of integration makes it a go-to for many developers and businesses. If you're sending critical notifications, password resets, or welcome emails, Postmark often "just works," and that's a huge win.
But here's a crucial distinction: Postmark excels at sending your email. It handles the complexities of its own email infrastructure, ensuring its servers are reputable and its internal SPF and DKIM records are correctly configured. However, your email deliverability and domain reputation are also heavily influenced by DMARC – a standard that operates at the domain level, encompassing all email sent from your domain, not just what Postmark handles.
This is where many organizations, even those happily using Postmark, run into a blind spot. They assume that because Postmark handles their primary transactional volume, their DMARC posture is automatically solid. The reality is often far more complex.
You might be wondering, "If Postmark handles my email, why do I need something else for DMARC?" This article will explain when and why augmenting your email toolkit with a DMARC aggregate report parser like Aligned becomes not just beneficial, but essential for maintaining deliverability and protecting your domain.
Postmark's Strengths and What It Handles (and Doesn't)
Postmark is designed for high-volume, high-deliverability transactional email. It provides:
- Reliable Sending: Excellent uptime and robust infrastructure.
- Fast Delivery: Optimized for speed, crucial for transactional messages.
- API Simplicity: Easy to integrate into applications.
- Basic Analytics: Open and click tracking, bounce reporting.
- SPF and DKIM for its own infrastructure: When you send through Postmark, they handle the SPF and DKIM records for their sending domains (e.g.,
pm_mt.postmarkapp.comfor DKIM signatures). This means emails sent by Postmark will generally pass SPF and DKIM checks in isolation.
However, Postmark does not provide a comprehensive view of your domain's DMARC health across all sending sources. It doesn't analyze DMARC aggregate reports from receiving mail servers (like Gmail, Outlook, etc.) to tell you:
- Who else is sending email purporting to be from your domain?
- Which of those sources are failing DMARC alignment?
- Why are they failing (SPF, DKIM, or both)?
- What concrete steps you need to take to fix those failures?
Even if 90% of your email goes through Postmark, that remaining 10% (or even 1%) from other services, or even malicious spoofing attempts, can significantly impact your domain's reputation and lead to deliverability issues down the line when DMARC enforcement policies (p=quarantine or p=reject) are put in place.