Email infrastructure for SaaS teams
Most SaaS platforms need more than send-an-email. You need password resets, signup verifications, support inboxes, and privacy-preserving aliases. Postscale handles all of it under one API key.
What we hear from teams in this space
Email setup eats sprint cycles
DKIM, SPF, DMARC, bounce handling, IP warming, suppression lists — every team relearns this from scratch. Postscale ships with the auth records, retries, and reputation handling already wired up.
Split vendor stack
One vendor for transactional, another for inbound parsing, a third for privacy addresses. Three DPAs, three bills, three webhook shapes to handle. Consolidation is cheaper and simpler.
Unpredictable scaling costs
Usage-priced vendors add add-on fees for inbound, validations, dedicated IPs. At 100k sends/month you're often paying 50% more than the headline tier.
How Postscale fits
Transactional email — password resets, receipts, notifications
REST API or SMTP relay. DKIM + DMARC configured in two CNAMEs. Real-time delivery webhooks. Works with any stack — Rails, Django, Go, Node, PHP, React Email.
Support inbox & email-driven workflows
Point an MX record; every inbound message arrives as a signed webhook with parsed headers, body, and attachments. Build ticketing, reply-to-open, auto-routing in hours not weeks.
Privacy-preserving signup flow (Shield)
Generate a masked address at signup time instead of asking for the user's real email. Reduces churn from privacy-conscious users, matches Apple's Hide My Email UX in your own product.
Deliverability visibility
DMARC reports parsed automatically. See which sending sources are authorized, which aren't, and track progress from p=none → quarantine → reject without breaking legitimate mail.
Compliance & data residency
Operated by DNScale OÜ (Estonia, EU). All processing on EU infrastructure. Our standard Data Processing Agreement is GDPR-compliant out of the box — no separate negotiation, no transfer assessment for EU controllers.
Further reading
SPF, DKIM, DMARC — the 2026 setup guide
What every SaaS team needs to wire up before the first send.
Resend vs Postmark vs Mailgun vs Postscale
Honest side-by-side of the four transactional email APIs worth naming.
The SendGrid alternative
What changes (and what doesn't) when you switch from SendGrid.
See it in your stack
Free tier covers an evaluation. Transactional, inbound, masked, DMARC, and XRechnung — one API key.
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