Deliverability.
Successful arrival isn't a coincidence. It's trust built over years.
Email marketing only works if delivered successfully. Reliable delivery isn't achieved overnight. It takes years of consistent, clean dispatching. martrexo® brings you exactly that well-established sender reputation, backed by our own gateways, controlled reputation and end-to-end authentication, operated in Germany and recognized by leading institutions.
Trust that's grown over years
Mailbox providers decide between “inbox” and “spam folder” based on the sender's reputation. It's a kind of trust score resulting from the sender's behavior over time.
This value can't be bought or forced; it grows with every cleanly delivered campaign, with low complaint rates and a consistent, reliable dispatch pattern.
It delivers exactly the head start that is hard to come by for new senders. martrexo has been sending through an established, continuously maintained infrastructure for years. Its proven delivery track record is there for you to benefit from. Every email you send through the platform enjoys this good reputation from day one, instead of having to build up trust the hard way.
Deliverability as a service
In martrexo, deliverability isn't a side effect but an actively managed service. Dispatch runs through our own, independent gateways. Worldwide, without any third-party providers. Our certifications aren't one-time seals, they reflect continuously maintained standards and sender reputation.
CSA Certified
As a Certified Senders Alliance sender, martrexo is on the Certified IP List and continuously audited. This listing enables preferential handling by participating mailbox providers and webmail services.
M3AAWG member
As a member of the Messaging, Malware and Mobile Anti-Abuse Working Group, Martrexo commits to worldwide quality standards and supports industry best practices for combating spam and abuse.
On top of that comes ongoing reputation monitoring along with clean bounce and complaint management: soft and hard bounces are classified and handled accordingly, complaints are processed automatically, and recipient lists are kept clean. That's how the reputation we've built remains stable for the long term.
BSI Hall of Fame
Gold Status
martrexo, a brand of Webstrategy GmbH, was recognized by BSI, Bitkom e.V. and eco e.V. during the Email Security Year and awarded Gold Status .
This recognition underscores our commitment to the Technical Guidelines TR-03108 (Secure Email Transport) and TR-03182 (Email Authentication). Gold status confirms the full implementation of DNSSEC.
Authentication “out of the box”
Every email sent through martrexo is fully authenticated without any manual intervention.
SPF, DKIM, DMARC
For provable sender authenticity, fully set-up without any manual effort.
MTA-STS and TLS
For encrypted transport, guarding against downgrade attacks along the delivery path.
Reverse DNS
For clean delivery signals that receiving systems actively check.
List-Unsubscribe
One-click unsubscribe per RFC 8058 as required by major mailbox providers for qualifying bulk senders.
Monitored around the clock
Once built, trust must be maintained. That's why stability at Martrexo is actively monitored. Every platform component, all interfaces with customer systems and our own services, are continuously checked, including their interdependencies.
Automated alert systems trigger before an anomaly turns into an outage. The current operating status is fully transparent, from the database through the job queue to bounce synchronization, CRM integration and email processing.
Legal & Data Protection
martrexo erfüllt die GDPR and the German Federal Data Protection Act (BDSG); hosting takes place exclusively in Germany.
Double opt-in, opt-in management, and audit-proof logging of consents are standard features. AVV and TOMs are provided.
Als in Deutschland betriebener Anbieter mit eigener Infrastruktur bietet martrexo echte Datensouveränität. Dieses Governance-Argument zählt überall, wo Fragen rund um Schrems II und den CLOUD Act eine Rolle spielen.
For your IT
Setup, operation, and support are all included: The system requires only a few DNS entries. Everything else is handled entirely by martrexo.
Existing systems (websites, databases, CRM) can be integrated using purpose-built interfaces; technical effort only arises where an interface is needed. Single sign-on ensures an access architecture that's always up to date and maintenance-free.
Support as a Differentiator
At martrexo, you get real, human support at every tier. No call centers, no bots. From the Engage tier up, a personal Customer Success Manager is also on hand.
Delivery you can rely on.
Trust built over years; our own gateways; end-to-end authentication — that's the foundation for every campaign. Let's discuss a solution tailored to your specific needs.