Based on our record, Email List Verify should be more popular than Superblocks. It has been mentiond 2 times 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.
Superblocks: This is a Retool alternative for building internal apps. There are so many internal app builders that have come out recently. Superblocks is the only one I've found that has python support for script blocks alongside the much more common JS script blocks. I've read that tooljet is working on adding Python support. Superblocks drag and drop interface builder is not the best but it's totally functional. Source: over 1 year ago
If you're not getting the right email addresses from ContactOut and it's bouncing back, you could always run the email addresses through something like emaillistverify.com to make sure they're valid before you try to email them. (you should do that always anyway to protect your email deliverability). Source: almost 2 years ago
Emaillistverify.com is the service I use. Source: almost 2 years ago
Retool - Build custom internal tools in minutes.
NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
Budibase - What Wordpress is to websites, Budibase is to web apps. Budibase is a free and open source web app builder for creating, launching and growing web applications. Budibase eliminates repetition and dramatically reduces development time. Check it out.
ZeroBounce - Removes invalid emails from your list to prevent email bounces from ruining your deliverability.
ToolJet - Open-source alternative for Retool
Email Verifier - Email verifier app lets you verify email.