Strong
Modern email infrastructure

Email infrastructure.
Built for delivery.

Corporate email, email campaigns and modern mail infrastructure — in one platform. Create companies, connect domains and send email with full control over your infrastructure.

Start freeExplore features
Built on modern open-source infrastructure
  • Next.js
  • React
  • tRPC
  • Drizzle
  • PostgreSQL
  • Redis

Infrastructure verified

Modern authentication and transport security for your domains.

All systems operational
  • SPF

    Sender Policy Framework

  • DKIM

    RSA 2048

  • DMARC

    p=reject

  • MTA-STS

    TLS enforcement

  • TLS-RPT

    Delivery reporting

  • PTR / A

    Reverse DNS

Powered by modern infrastructure

  • Next.js
  • React
  • tRPC
  • Drizzle
  • PostgreSQL
  • Redis
One platform

Everything you need to own your email.

Strong Mail brings corporate email, campaigns, domain infrastructure and analytics together in a single workspace.

Campaigns

Send campaigns.
Know what happens next.

Schedule campaigns, manage audiences and keep the whole delivery pipeline under control — from the first email to the last event.

Corporate Mail

Business email,
without the complexity.

Domains, mailboxes, aliases and identities — all managed from one workspace.

Template Studio

Design emails
visually.

Build responsive templates in a visual editor.

Analytics

Data that
makes sense.

Deliveries, opens, clicks, bounces and other events — in the context of each campaign.

Domains

Domain infrastructure
on autopilot.

Automatic DNS authentication setup and domain health monitoring.

  • Organizations

    A separate workspace for every company.

  • Teams & Roles

    Members, permissions and access control.

  • Security

    Authentication and tenant isolation out of the box.

Built as a modern platform
  • Next.js
  • React
  • tRPC
  • Drizzle
  • PostgreSQL
  • Redis
Infrastructure

Your infrastructure.
Your domains. Your mail.

Strong Mail combines a SaaS control plane with modern mail infrastructure, so managing email stays transparent, controllable and scalable.

Platform architecture

One control plane.

Operational
Strong Mail
SaaS control plane
Campaigns
Domains
Security
PostgreSQL
Organizations · Domains · Campaigns
Redis
Queues · Jobs · Delivery pipeline
Modern mail server
SMTP · JMAP · IMAP · Submission
Healthy
Internet
Global email delivery

Domain health

Delivery starts here.

strong-example.com
Domain authentication
Verified
  • SPFVerified
    Authorized senders
  • DKIMRSA 2048
    Cryptographic signing
  • DMARCp=reject
    Policy enforcement
  • MTA-STSActive
    TLS enforcement
  • TLS-RPTActive
    Transport reporting
  • PTR / AVerified
    Reverse DNS
99.98%
delivery health
TLS 1.3
transport security

  • Control

    Domains, DNS, mailboxes and delivery settings are managed from a single workspace.

  • Scale

    Queues, background jobs and a dedicated mail layer let you scale sending.

  • Protocols

    SMTP, JMAP, DNS authentication and modern transport security standards.

Built around open protocols
  • SMTP
  • JMAP
  • DNS
  • TLS
  • SPF
  • DKIM
  • DMARC
  • MTA-STS
  • TLS-RPT
Deliverability

Delivery starts with trust.

Strong Mail helps you control every layer of delivery — from domain authentication to the final delivery event.

  • Authenticated by default

    SPF, DKIM, DMARC and transport policies are part of your domain setup.

  • Observable delivery

    Every key event flows through the delivery pipeline and is available for analysis.

  • Built for throughput

    Queues and background processing let you send large volumes without blocking your app.

Campaigns

From idea to inbox.

Create campaigns, pick your audience, schedule sends and follow every delivery — all in one workspace.

Delivery workflow

Every campaign follows a clear path.

Queueing, sending, retries and delivery events run as a single pipeline, so you can stay focused on the campaign itself.

  1. Template

    Create the message

  2. Audience

    Choose recipients

  3. Schedule

    Set delivery time

  4. Queue

    Process jobs

  5. Delivery

    Track events

  • Smart scheduling

    Schedule sends in advance and control exactly when each campaign goes out.

  • Queue & retries

    Background jobs work through the queue and handle temporary delivery errors automatically.

  • Actionable analytics

    Right after sending, go from campaign events to real results.

Template Studio

Beautiful emails
without fighting HTML.

Build responsive email templates visually. Drag, drop, style and preview — no need to hand-assemble every email from scratch.

  • Visual editing

    Edit the structure of your email visually, without switching between HTML and preview.

  • Reusable blocks

    Save heroes, calls to action, content blocks and more to reuse them later.

  • Responsive by design

    Create emails that look polished on both desktop and mobile.

Built for email

Template Studio combines a visual editing experience with email-first components, so design and delivery stay part of one platform.

Business Mail

One inbox. Every business mailbox.

Strong Mail business email works in a modern web client — with a shared inbox, threads, search, calendar and contacts.

Strong Mail web client: inbox, message list and an open email

Your business inbox

A real mail client.
Not another dashboard mockup.

Receive, read and send business email in a full-featured webmail interface that works directly with your mail infrastructure.

Built for modern business mail

  • Threaded conversations

    Related messages are grouped into a single conversation thread.

  • Fast search

    Search across mailboxes and unified views without a complicated interface.

  • Mail & calendar

    Mail, calendar and other work tools are available from one client.

  • Contacts

    Address books and contacts stay part of the same workspace.

Workspace

Strong Mail

Organizations, domains, mailboxes, campaigns and analytics.

Webmail

Strong Webmail

A JMAP web client working directly with the Strong Mail server.

  • Infrastructure

    Mail server + JMAP

  • Mail experience

    Threads + Search + Templates

  • Business identity

    Domains + Mailboxes + Aliases

Your mail, your infrastructure

Strong Mail adds SaaS-grade management on top of self-hosted mail infrastructure while keeping the full, familiar email experience.

Analytics

Know what happened after you hit Send.

Track deliveries, opens, clicks, bounces and other campaign events in one clear analytics workspace.

Understand engagement

See not just how many emails went out, but what happened after delivery.

Compare campaigns

Compare delivery and engagement across campaigns, audiences and time periods.

Know your audience

Use campaign events to better understand how your recipients behave.

Events become insights

Strong Mail analytics ties delivery events to a specific campaign, so after sending you see a clear picture of the result instead of raw data.

Organizations

Built for companies, not just inboxes.

Manage your team, domains, mailboxes and email campaigns in a single isolated workspace.

One workspace

All company data lives inside its own organization boundary.

Clear roles

Owners, admins and members get exactly the access they need — nothing more.

Tenant isolation

Domains, mailboxes, campaigns and templates belong to a specific organization.

One organization. Everything connected.
  1. Organization
  2. Team
  3. Domains
  4. Mailboxes
  5. Campaigns
  6. Templates
Security & authentication

Security is part of the infrastructure.

Strong Mail builds security into every layer of the platform — from DNS authentication and TLS to organization isolation and access control.

DKIM RSA 2048

Cryptographically sign outgoing mail with your domain's identity.

DMARC enforcement

Protect your domain from spoofing with strict authentication policies.

DNS verification

SPF, PTR, A and other infrastructure records stay verified.

Tenant isolation

Each organization's data stays separated across the whole application.

Security by default
  • TLS 1.3
  • DKIM RSA 2048
  • DMARC p=reject
  • MTA-STS
  • TLS-RPT
  • SPF
  • PTR / A
  • RBAC
  • Tenant isolation
  • Audit logs
Pricing

Transparent pricing.
No surprises.

Cloud

€3

per mailbox per month

Own server

€590

per year, unlimited mailboxes

Newsletters

from €19 / mo

up to 10,000 contacts

Prices exclude VAT.

All prices and bundlesOpen Strong Mail
FAQ

Questions, answered.

Everything you need to know about business email, domains, campaigns and the Strong Mail infrastructure.

Is Strong Mail only for newsletters?

No. Strong Mail combines business email, email campaigns and the infrastructure needed to run both in one platform.

Can I use my own domain?

Yes. Connect your own domain and set up the required DNS records for SPF, DKIM, DMARC, MTA-STS, TLS-RPT and the rest of your mail infrastructure.

How much does Strong Mail cost?

In the cloud it's €3 per mailbox per month. Newsletters start at €19 per month for up to 10,000 contacts. All prices exclude VAT — see the pricing page for details.

Can I run Strong Mail on my own server?

Yes. A self-hosted licence costs €590 per year (excl. VAT). Your data stays on your infrastructure, and we can handle the installation for you.

Can my whole team use Strong Mail?

Yes. An organization can have multiple members with roles and permissions, so your team works together without sharing passwords.

Can I create HTML email templates?

Yes. The visual template editor lets you build responsive emails without hand-coding every message in HTML.

Does Strong Mail work with Cloudflare?

Yes. You can use Cloudflare for DNS and domain configuration.

Can I send campaigns from my own domain?

Yes. Campaigns are sent from verified domains connected to your Strong Mail organization.

Is my organization's data isolated?

Yes. The organization is the primary workspace boundary: members, domains, mailboxes, campaigns and templates belong to it alone.

Still have questions? See pricing or talk to our team.

Strong Mail

Ready to build
better email infrastructure?

Create your organization, connect your domain and run business email and email campaigns from one platform.

Get startedTalk to sales
  • Quick setup
  • Cloud or your own server
  • Isolated company data

Your domain. Your infrastructure. Your email.