They simply offer to subscribe to the newsletter

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Whatever the image, it is a visual anchor, and this is another reason to pay attention to the pop-up window.
Types of pop-ups by purpose

Bonus in exchange for contacts
This is, without exaggeration, the most common type of pop-ups in the Russian whatsapp number list Internet. The principle is as follows: you offer the user a tangible discount, bonus, special status or gift in exchange for contacts (usually email). At the same time, the pop-up form has an unobtrusive checkbox with consent to the processing of personal data and subscription to the newsletter. As a result, the user gets his "goodie", and you get another loyal address in the contact database.
Functional pop-up from "1001 tour": to find out the calculation results, you need to leave your contacts.
Subscribe to the newsletter

These pop-ups do not promise real bonuses in exchange for contacts. , while motivating the user with the usefulness and uniqueness of the letters. Some pop-ups have no motivation at all, there is only a block for entering data and a "Subscribe" button. Such windows also work if the site has already earned a good reputation with the user.The mechanism is as follows: the user sees a pop-up that offers him to take a test. When the user passes all the stages of the test, he only needs to leave his contacts to find out the result.