What is double opt-in? Confirmed subscriptions explained
Double opt-in is a signup process where a new subscriber must confirm their email address, usually by clicking a link in a confirmation email, before they are added to your list.
How it works
- 1. Someone enters their email address in your signup form.
- 2. You send a short confirmation email with no promotional content.
- 3. They click the confirmation link.
- 4. Only then do they start receiving your newsletter.
Why it helps
It stops people from signing up someone else's address, and it keeps typos and fake addresses off your list.
Google advises confirming each recipient's address before subscribing them and avoiding opt-in forms that are checked by default. Yahoo suggests double or confirmed opt-in to reduce invalid recipients.
Fewer bad addresses means fewer bounces and fewer spam complaints.
Is it required?
Google and Yahoo recommend it but do not require it. The U.S. CAN-SPAM Act does not require prior consent for commercial email, though it does require a working opt-out. Rules in other countries differ, so check the rules for where your subscribers live.
How Newsletter Ready handles this
Subscribers in the EU and UK get a double opt-in confirmation email automatically.
Newsletter Ready records each subscriber's consent basis and date.
Email newsletter glossary
- What is SPF? Sender Policy Framework explained simply
- What is DKIM? Email signatures explained simply
- What is DMARC? Email spoofing protection explained simply
- What is a preheader? The preview text next to your subject line
- What is a hard bounce? Undeliverable email explained
- What is one-click unsubscribe? RFC 8058 explained simply
- What is CAN-SPAM? The U.S. email law explained simply
Sources
- Google: Email sender guidelines
- Yahoo Sender Hub: Sender Best Practices
- FTC: CAN-SPAM Act: A Compliance Guide for Business
This page is general information, not legal advice.