Double Opt-In

Double opt-in (also called confirmed opt-in) is a two-step subscription process: a person submits their address, then must click a link in a confirmation email to prove they own the address and want the mail.

Why it matters

It keeps typos, bots and addresses entered by other people off a list, which protects sender reputation and reduces the chance of hitting spam traps. It also provides a record of consent, which some regions' privacy rules, such as the GDPR, make valuable; legal requirements vary by country, so check the rules that apply to you. The cost is that some genuine people never click, so the list grows more slowly. Single opt-in adds the address immediately without confirmation.

Example

Flow:

1. A visitor enters jane@example.com in a form.
2. The system sends: "Please confirm your subscription" with a unique link such as https://example.com/confirm?t=9f3a....
3. Only when Jane clicks is she marked as confirmed and moved onto the list.

Store the timestamp, IP address and the form used at confirmation as evidence.

Common mistakes

• Sending the confirmation email through a poorly authenticated domain, so it lands in spam.
• Making the link expire in minutes.
• Adding unconfirmed addresses to the list anyway.

Related

• List Hygiene
• Email Marketing
• Spam Trap
• GDPR
• टूल: Email deliverability test

यह पेज सामान्य जानकारी है, जिसे हमारी संपादकीय टीम ने लिखा है और दस्तावेज़ीकरण बदलने पर अपडेट किया जाता है। सर्वर और प्रदाता अलग-अलग होते हैं, इसलिए बदलाव पहले सुरक्षित तरीके से जाँचें। देखें: संपादकीय नीति और अस्वीकरण.