Most ecom brands and newsletter operators have no idea how much dead emails cost them.

The average email list has 20-30% invalid addresses. If you're paying $50/mo for an ESP with 10k contacts, $10-15/mo goes straight to addresses that don't exist.

But it gets worse. High bounce rates tank your sender reputation. Once your domain gets flagged, even your real subscribers stop seeing your emails. Open rates drop. Revenue drops.

The fix takes 5 minutes. Run your list through a verification tool before every campaign. Remove the invalids, catch the typos (gmal.com, yaho.com), and flag the disposable addresses.

I built MailCheck because I was tired of watching good emails land in spam. It's $19/mo with a free trial — verify your first list and see the difference in your next campaign's open rate.

Stop sending emails into the void.