How to Clean Contact List from Unavailable Addresses

Contact verification — EmailMassivo tool for cleaning the database from unavailable, unsubscribed, and complained addresses. Regular cleaning helps improve deliverability and campaign effectiveness.

Where to Find the Function

Contact verification is available in three places:

In the "Lists" Section

Go to the Contacts → Lists section.
Open the menu of the desired list (three dots on the right).
Select "Contact verification".

Inside a Specific List

Go to the Contacts → Lists section.
Open the desired list.
In the actions menu (three dots on the top right) select "Contact verification".

In the "Tools" Section

Go to the Contacts → Tools section.
Select the Contact verification card.

How to Select a List for Cleaning

There is a dropdown list at the top of the page.

You can select:

All Contacts (clean the entire database at once).
Specific List (for example, "Website Subscribers" or "Customers").

What Can Be Deleted

1. Unavailable Contacts

Addresses that return delivery errors (hard bounce and soft bounce). These include:

Does not exist — addresses that do not exist or have been deleted.
Mailbox full — addresses that do not accept emails due to mailbox limit.
Temporarily unavailable — addresses that do not accept emails at the moment but may become available later.

Tip: It is recommended to delete non-existent addresses first

2. Unsubscribed Contacts

Contacts that:

Unsubscribed themselves from campaigns
Complained about your emails as spam.

Important!
According to the law and email service rules, such contacts cannot be added back to the list without explicit renewed consent.

How to Clean the Database

Select a list or the entire database.
Mark the address categories you want to delete.
Click the "Delete" button.
Confirm deletion in the pop-up window.

Deleted contacts will disappear from all lists and will no longer receive your emails.

Important to Know

Cleaning is irreversible — contacts cannot be restored.
It is better to perform contact verification regularly, especially if the database is large.