Importr module allows to verify email, phone and address prior to importing or updating Salesforce records.
Start by selecting the Mass Verify option from the importr dataset.
In the dialogue window, you can select the records that will be verified. Also, you can exclude or include fields that will be verified.
Once you made your selections, press the Verify All button.
Review the number of credits that will be required to perform this operation and press the Confirm button.
Note: if you do not have the correct number of credits an option to purchase additional credits will be provided.
Read more:
How does email verification work?