A hit for sure
If you want to achieve a higher response rate with your mailings than before, then this is easier than you think. The most promising method is to arouse the curiosity of the recipients. And what stimulates human curiosity more than anything else? Locked doors or chests that hide a secret – there every adult becomes an expectant child again. If you then put a key in their hand to open the lock, they will hardly be able restrain themselves. They will want to see if the key fits so they can hold the hidden treasure in his hands – before someone else gets it.