With the new General Data Protection Regulation (GDPR), it is essential that you obtain proof of consent from your subscribers before sending mass emails with Mailpro.
There are currently 2 simple ways to do this process with Mailpro: the single Opt-in and the Double Opt-in.
Now: What is the difference between the single Opt-in and the Double Opt-in?
The single Opt-in is when a potential client subscribes to you newsletters through a form to receive information. It is a unique and simple process.
The double acceptance or double Opt-in is very similar to the single Opt-in but has one more step. Potential clients subscribe to your form, and then receive an email, where they have to confirm their sign up. This process will help you have a clean address book, increase your reputation as a sender and have a more participatory audience in general.
To use this functionality, you can see the detailed information in the following link: Use Double Opt-in