23 years from Stockholm
Engineered in Stockholm · Established 2003

Email infrastructure for teams that take sending seriously.

SMTP relay, email API, managed PowerMTA, dedicated bare-metal, cold-email infrastructure built for the post-Spamhaus reality, and managed deliverability work done by people instead of dashboards. 23 years from the same Swedish operator. Dedicated IPs in every plan.

€399 SMTP Relay starter
10 dedicated IPs
23 Years from the
same operator
EU Operator, EU data
centres by default
0.1% Complaint rate
tracked daily
curl — POST /api/send/v1
# Production send through Stockholm edge curl -X POST https://api.authorizehosting.com/v1/send \ -H "Authorization: Bearer ah_live_..." \ -H "Content-Type: application/json" \ -d '{ "from": "alerts@yourdomain.com", "to": "customer@example.com", "subject": "Order #4821 confirmed", "stream": "transactional", "track_opens": false }' 202 Accepted · queued · vMTA: tx-fi-04
Used in production by
A Swiss private bankThree Nordic ESPsA Brussels telcoA 1.2M-subscriber publisherA Hamburg retailer
Six product lines

Each one is a different shape, because the problems are different.

Most operators sell one product and try to bend it into every use case. We sell six because SMTP relay, transactional API, managed PowerMTA, bare-metal hardware, cold outbound, and deliverability consulting are genuinely different jobs.

SMTP Relay

From €399/mo · 10 dedicated IPs · application-friendly

Drop-in behind any application that already speaks SMTP. The fastest path to dedicated IPs without rewriting how the app sends mail.

Explore SMTP Relay

Email API

From €469/mo · REST + webhooks · for product code

For product code that wants to call POST /v1/send instead of opening an SMTP socket. Idempotency keys, structured webhooks, message logs.

Explore Email API

Managed PowerMTA

From €899/mo · License + hardware + ops

The full PowerMTA stack — license, dedicated server, vMTAs, IP routing — in one bill instead of three contracts.

Explore Managed PowerMTA

Dedicated Email Servers

From €995/mo · Bare metal · your MTA

Real Xeon CPUs, no hypervisor sharing, port 25 open from day one, reverse DNS configured to your domain. Bring your Postfix, Exim, KumoMTA, or your own PowerMTA license.

Explore Dedicated Email Servers

Cold Email Infrastructure

From €1,799/mo · Post-Spamhaus 2025

Built for outbound work that takes 2026 receiver conditions seriously. Continuous warming, isolated cousin domains, daily monitoring against Gmail RETVec and Spamhaus listings.

Explore Cold Email Infrastructure

Managed Deliverability

From €1,500 · Audit · €1,200/mo retainer

Deliverability work, done by people. Authentication review, BIMI rollout, blocklist remediation, monthly DMARC processing. Sold standalone — works on top of any sending stack.

Explore Managed Deliverability
Authorize Hosting VS

How we sit next to the operators most people consider.

The honest comparison. Most of the differences come from a single decision — should dedicated IPs be the default or a paid premium — and that one decision cascades into nearly everything else.

Authorize Hosting SendGridMailgunPostmarkAmazon SES
Starter price (Pro tier) €399/mo $89.95/mo $35/mo $16.50/mo $0.10/1K
Dedicated IPs included? 10 IPs included Add-on, 100K+ tier Scale plan only $50/IP, 300K min $24.95/IP/mo
EU operator? Yes, since 2003 US (Twilio) US (Sinch) US (ActiveCampaign) US (Amazon)
Operator continuity 23 years, no acquisition Acquired 2018 Sold 3× since 2017 Acquired 2022 N/A
Free tier eliminated? No free tier (paid since day 1) Yes, May 2025 PAYG doubled Dec 2025
Spamhaus help when listed Triage, included Self-service docs Self-service docs Email support Forum + docs

Pricing as of April 2026 from each operator's published pricing page. Operator continuity per public M&A records.

From the operator desk

The work most providers don't talk about.

Email infrastructure has gotten harder, not easier. Gmail deployed RETVec inside its spam classifier — 38% better detection, 19.4% fewer false positives, specifically engineered to defeat the adversarial text patterns cold email tools have leaned on for years. Yahoo cut storage from 1TB to 20GB in August 2025, recycling addresses that promptly turned into spamtraps. Spamhaus published a paper in June 2025 stating cold emailing as practised meets their definition of spam.

There is no shortcut around any of this. The work is unglamorous: clean authentication, healthy lists, real engagement, complaint rates below 0.1%, properly aligned DMARC. Stockholm, since 2003 — and we'll still be doing this in 2030.

We made a deliberate choice to stay independent. No private-equity rollup, no rebrand, no flagship investor whose timeline is shorter than our customers'. Same operator team that built this in 2003 is the team running it in 2026.
Mikael Vainiomaa
Mikael Vainiomaa CEO · Joined Authorize Hosting in 2012
FAQ

Common questions before signing up

Which service should I start with?
SMTP Relay (€399/mo) if your application already speaks SMTP and you want to keep that integration. Email API (€469/mo) if the sending logic should live in product code. Managed PowerMTA (€899/mo) if sustained volume passes 100K messages per hour with stream isolation requirements. Dedicated Email Servers (€995/mo) if your team brings its own email expertise and wants bare metal with choice of MTA. Cold Email Infrastructure (€1,799/mo) for outbound prospecting. Managed Deliverability (€1,500 audit / €1,200 retainer) for the human expertise layer around any existing infrastructure.
Why no free tier?
Email infrastructure is operationally expensive on day one. The shared-pool free tiers that existed in this segment were subsidized by paid customers, and they collapsed publicly in 2025 — SendGrid eliminated theirs in May, Mailgun doubled pay-as-you-go pricing in December. We never had one because the operational model never made sense for serious sending. Plans start at production scale, with direct operator engagement during onboarding and structured IP warming across the first 14 to 28 days.
Is there a free trial?
No free trial. Scoping conversations before signup are free, though — the path for evaluating fit is a technical call with the operator team. Annual prepayment qualifies for a 10% discount.
Where are the data centres?
Sweden and Germany by default. EU data residency simplifies the GDPR posture for European data subjects. US-East and Singapore/Tokyo are available on Custom plans for teams with specific latency or regulatory requirements.
Do you sign DPAs?
Yes. Standard GDPR-aligned DPA available, plus custom amendments for regulated industries (banks, healthcare, public sector). The legal posture is built around being an EU operator processing EU data — different starting point than US-headquartered providers.