99% Email Deliverability

Your emails are in the right hands with Constant Campaigns.


Permission Is Key

We strongly advocate permission-based email marketing because a "spam-free zone" is a crucial ingredient for achieving top email deliverability. That’s why we’ve created more than just an anti-spam policy; we’ve created an anti-spam culture.

Our anti-abuse department monitors accounts and takes appropriate action on specific threats. These actions start with sending warnings and even closing accounts when necessary. But our most important action is education. We spread marketing knowledge, email etiquette and best practices on our blog, newsletters and free user guides.

Automatic List Hygiene

We process opt-out requests and bounces instantly to keep your email marketing list free of deliverability problems. This improves your reputation as a sender, ensures CAN-SPAM compliance and increases inbox placement rates.We automatically add list-unsubscribe headers that work with the built-in unsubscribe features of major email service providers like Gmail.

World-Class Email Delivery

Our goal is to provide the best possible email deliverability. And because deliverability is a moving target, we team with industry leaders like Return Path, Litmus, Port 25, SpamHaus and SpamAssassin to lock in the best in email delivery technology.

Industry Proactivity

Constant Campaigns is a reputable member of all major email industry organizations, including those listed below. We actively participate in helping formulate email best practices and standards, so our customers can benefit from better delivery rates.Messaging Anti-Abuse Working Group (MAAWG)is one of the largest global organizations working against all forms of messaging abuse. MAAWG fights spam, phishing, denial of service (DoS) attacks, mobile spam and other forms of email abuse. The organization has a global membership representing more than one billion mailboxes.Email Experience Council (EEC) is a global professional organization that advocates email marketing, emphasizing its return on investment (ROI).Online Trust Alliance (OTA) is an industry group supported globally by over 100 organizations. It promotes innovations that protect Internet users and enhance online trust.The Email Sender and Provider Coalition (ESPC) is a group of industry leaders working together to solve spam and deliverability problems through legislative advocacy, technological development, and industry standards.SuretyMail is a widely-used accreditation service for email senders provided by the Institute for Social Internet Public Policy (ISIP). It organizes and supports international email industry conferences and deliverability summits.


We use authentications to prevent your emails from being misjudged and blocked by spam filters. The Constant Campaigns platform supports Sender Policy Framework (SPF) and signing messages with DomainKeys Identified Mail (DKIM).A Sender Policy Framework (SPF) record is a type of Domain Name Service (DNS) record that identifies mail servers that have permission to send emails on behalf of your domain.DomainKeys Identified Mail (DKIM) is a method of identifying senders associated with a message domain and its reputation. It evaluates whether to trust the message for delivery or not.

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