When you create a list, you pick what you want CleanMyList to do. There are four choices.
Verify
Checks whether each email is real and safe to send to. This is the simple, classic clean. Choose this if you just want to remove bad addresses before a send.
Verify + Rescue
Checks every email, then tries to find a fresh, working address for the ones that fail. Choose this when you do not want to lose a contact just because their old email stopped working.
Verify + Rescue + Enrich
Does everything above, and also fills in extra details about your contacts — like their name, job title, or company. Choose this when you want a cleaner and richer list at the same time.
Enrich
Starts from what you have (an email, or a name plus a website) and fills in the gaps. Choose this when your goal is to add details to contacts rather than clean a sending list.
Tip
Not sure? Start with Verify. It is the cheapest and answers the most important question: will this email reach someone? You can always run other options later.
The last three options can use a Basic or a deeper enrichment level. Learn more in the Finding & enriching contacts section.
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If you still have a question, we are happy to help.