ElasticSearch - Elasticsearch is an open source, distributed, RESTful search engine.
Warmup Inbox - Warmup Inbox is a tool that automates the process of warming up your email inboxes, raising your sender reputation and inbox health automatically.
Algolia - Algolia's Search API makes it easy to deliver a great search experience in your apps & websites. Algolia Search provides hosted full-text, numerical, faceted and geolocalized search.
MailReach.co - The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.
Apache Solr - Solr is an open source enterprise search server based on Lucene search library, with XML/HTTP and...
Warmbox.ai - Warm up your cold email inbox, and never land in spam anymore!