A Few Reasons Why Email Double Opt-In

Email double opt-in has been around since recipients started complaining about emails they never subscribed to. Email service providers responded with filters and sender ranking; internet service providers had to act too, as spammers grew into the millions.

The scale of the problem

Analysis from Cisco Talos Intelligence has measured around 282 billion spam emails sent every day. From a consumer perspective there are only three things: the inbox, the email, and the sender. Behind the scenes there is a war going on to make sure your emails land.

Salesforce research surveying over 8,200 marketing leaders found that only 37% of companies feel completely satisfied with their consent management setup.

Why it matters

Deliverability. Most providers now use AI to validate, rank and filter senders. That rank slides down fast and climbs back slowly. Sending large volumes to people who never consented gets you ranked down, and in the worst case blacklisted.

Revenue. For companies where email is the main channel, fewer emails received means less revenue generated, which means less marketing budget.

Company image. Sending without consent creates angry customers who complain publicly, on social media, on review sites. That costs the brand.

What to do now

• Whether you use Marketing Cloud, Pardot, Eloqua or similar, create the right data model to support consent management.
• Build a contact preference centre that is genuinely easy to use, on mobile and desktop.
• Make unsubscribe and manage-preferences links clearly visible in every email.

Implement double opt-in whether or not your local law requires it. It is the first step in showing that you respect your subscriber’s consent.

Archive: this article dates from an earlier phase of our work, when marketing automation was our main focus. We have kept it online because the thinking still holds, but it is not where our practice sits today.