The email verification process is split into two sub-processes.
Pre-validation processes and post-validation processes. Each process prepares your mailing list containing email addresses for the next stage.
Currently, your mailing list is validated against 12 different stages and they include deduplication, domain check, spam trap verification, complainers database check, risk check, syntax check, MTA check, suppressed email validation, unbalanced delimiter check, mailbox error check, custom TLD removal, and real-time bounce processing.
Note: Email Verifier app DOES NOT send email to your contacts at any stage unless you specifically requested us to do so.