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Lettair Infrastructure and Deliverability.

You probably don't ever think about things like like fully redundant servers, enterprise class delivery engines, and in-house deliverability expertise, right? Luckily for you, our developers can't get enough of it. All you need to know is, we've got you covered.

Maintaining a good sender reputation.

Today, the most important factor in the delivery of your email is your sender reputation. If ISP's don't know you or don't like what you're sending, you won't be invited back. We're constantly working to ensure you can piggyback off our great reputation and give your campaigns the best chance of reaching the inbox.

  • Human Approval Process

    Before our new clients can send a single campaign, they are reviewed by our team to ensure they meet our comprehensive criteria, covering permission, email content, privacy and much more.

  • Email Authentication

    Email authentication allows our customers to prove they are who they say they are. Using technologies like Sender ID and DomainKeys, you can protect your reputation and improve the chances of your email getting delivered.

  • Best Practice Built In

    We support confirmed opt-in for all subscriber lists, include a single click unsubscribe link in all campaigns, and allow your subscribers to maintain their own subscription through preference centers.

  • ISP Feedback Loop Integration

    Campaign Monitor is integrated into the feedback loop of ISP’s like Yahoo, Hotmail, and AOL. We can detect if a subscriber marks you as spam, and can remove them from your list automatically.

  • Smart Bounce and Complaint Handling

    We automatically detect different types of bounces and react accordingly. Undeliverable addresses are removed immediately, while temporary fails are given additional chances before removal based on best practice.

  • Third party Deliverability Monitoring

    We use a number of third party tools to monitor our inbox delivery to dozens of the leading ISP’s, allowing us to spot potential delivery issues and react immediately. Our team monitors all major blacklists daily.

Reliable, secure server environment

To keep your data safe, secure, and always available, we use a state-of-the-art redundant server cluster in a fully managed, world class data center. All sensitive data is stored on servers behind a constantly maintained firewall using the same level of encryption as many banks.

  • World Class Data Servers

    Our US-based data center is "monitored 24x7" for all aspects of operational security and performance. It is also equipped with state-of-the-art security, including biometrics and sensors for intrusion detection.

  • Smart Redundancy

    We have redundancy at every layer of our application to ensure a smooth recovery in the event of any type of hardware failure. All data is also securely backed up offsite for the unlikely event of a system-wide failure.

  • Serious About Data Security

    All sensitive data is stored on servers behind a constantly maintained firewall. Our database servers are secured by additional access restrictions, and more sensitive data is encrypted.

  • Strict Privacy Policy

    Our strictly enforced privacy policy ensures your data is never shared with third parties and is kept safe and secure at all times. Only limited staff have access to your account in order to provide support.