I love that Bulk Email Checker has outstanding accuracy and performs live SMTP handshakes, which gives me total confidence that the emails are actually active. The pricing structure is incredibly fair and scalable for SMB businesses. I also appreciate the realtime mailbox probing and the pay-as-you-go model with no expiration. I found the bulk list upload great because it required no setup. Review collected by and hosted on G2.com.

I find the slow processing speeds on large lists a bit problematic. Review collected by and hosted on G2.com.