In the last several years, I collected over 17,000 not confirmed emails. They all didn't do the Double-Opt-In correctly, and they all didn't click on the activation link.

I would like to send automatically a reminder mail with [activation_link] after one and / or two days again (without doing it manually) to everyone who has not confirmed the subscription directly. The reminder mail could be something like this:

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Subject: "Reminder: Your registration for the newsletter has not yet been completed"

Hello,

I just wanted to quickly remind you that you have not yet confirmed your registration for my newsletter.

But you can easily do this by clicking on the button:

[activation_link]

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I think everyone would benefit who has the Double-Opt-In problem, like me.

Best regards