Based on our record, Kickbox seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
You can use a service like https://kickbox.com/ to validate and clean your email list. Buy some credits, put your lists through Kickbox, and it will spit out a clean, mailable list that you can begin contacting with confidence, and without worrying that your email address is going to get flagged for spam and whatnot. Source: almost 2 years ago
NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
Email Verifier - Email verifier app lets you verify email.
ZeroBounce - Removes invalid emails from your list to prevent email bounces from ruining your deliverability.
Verimail - Clean up email-address lists of any size or use our powerful API for real-time verification.
Email List Verify - The Fastest Way to Improve Email List Deliverability and ROI
TheChecker.co - Accurate email verification at low prices.