What are some alternatives?
When comparing Impressionwise and Blaze Verify, you can also consider the following products
Email Verifier - Email verifier app lets you verify email.
ZeroBounce - Removes invalid emails from your list to prevent email bounces from ruining your deliverability.
EmailRecon - Real-time email adddress validation and verification. The EmailRecon cloud list verification tool allows you to clean your email lists with a single click.
mailfloss - Bulk email verification for busy businesses and email marketers. Put your email validation on autopilot. One-time, 60-second setup, no developers needed. Get your emails delivered to real people and maximize your email ROI.
NoBounce Email List Cleaner - Email list validation & cleaning maximizes the efficiency of your email marketing campaigns and protects your email sender reputation.
Sparkpost - Deliver your app and website emails on time and to the inbox. Trusted to send 25% of the world's non-spam email. Email delivery for companies big and small.