You already know that you can add subscribers to your lists manually, one by one, or simply import them in bulk. Later on, when you get some new subscribers, you can simply update your subscriber lists.
However, instead of updating your lists time after time manually, we can provide you with a link to the subscriber signup form where your subscribers can opt-in directly into your chosen CO-SENDER subscriber list. In this way your subscriber list will be always up-to-date with the newest subscribers and you will never have to worry about importing them manually. Note that this option is available only for Paid plans.
If you would like to have an opt-in subscriber list, please contact CO-SENDER Support and we will be happy to set this up for you.