Email and e-invoicing for e-commerce
Order confirmations, shipping updates, abandoned-cart recovery, refund RMAs, and EN 16931 e-invoices — all from one EU-hosted API. Plus a path to the 2025 German B2B e-invoicing mandate without a separate invoicing stack.
What we hear from teams in this space
Deliverability on order mail
Order confirmations hitting spam are the worst possible outcome — customer expected it, didn't see it, opens a support ticket. Proper SPF, DKIM, DMARC, and dedicated IPs for transactional matter here more than in most verticals.
E-invoicing mandate (Germany, 2025–2028)
If you ship to German businesses you're already required to receive E-Rechnung / XRechnung; sending phases in through 2028. Most existing PSPs/ESPs don't handle it. Separate vendor = extra integration, extra DPA.
Returns and support via email
Customers reply to shipping notifications asking for RMAs, refund statuses, tracking updates. Without inbound parsing these land as unread notifications@ mail; with it, they become tickets automatically.
How Postscale fits
Order confirmations and shipping updates
Transactional sending with high deliverability, webhook confirmation of every delivered message, and template versioning so your 'order shipped' email doesn't break every time marketing updates a logo.
Customer replies → support tickets
When a customer hits Reply on a shipping update asking 'where is my order?', the inbound MX parses the message, attaches it to the original order via References header, and fires a webhook your helpdesk picks up.
German B2B invoicing (XRechnung / ZUGFeRD)
Send invoices in XRechnung, ZUGFeRD, or Factur-X format compliant with EN 16931. Receive incoming e-invoices from suppliers, parsed to structured JSON. Handles the 2025 B2B mandate directly.
Deliverability reports
DMARC RUA reports parsed and grouped by sending source. Catch spoofers impersonating your order-confirmation domain before they damage reputation.
EU compliance by default
Postscale is EU-operated (DNScale OÜ, Estonia). Order-mail payloads, invoices, and buyer contact data all stay in EU data centers. Our standard DPA covers GDPR processor requirements out of the box. For e-commerce platforms selling cross-border inside the EU, this simplifies the compliance story with your customers' procurement teams.
Further reading
XRechnung API: A developer's guide to Germany's e-invoicing mandate
What the 2025 mandate requires and how to actually implement it.
The complete guide to email deliverability in 2026
Get order confirmations into inboxes, not spam — the SPF/DKIM/DMARC playbook.
How to build a support inbox with an inbound email API
Turn email replies into structured webhooks your helpdesk can process.
See it in your stack
Free tier covers an evaluation. Five EU-hosted email APIs under one key.
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