Knowmail vs. Opt-Inbox Comparison


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About We research the best email marketing providers for small and medium-sized enterprises. Imagine if there was a way to improve communication without wasting time. That’s what Knowmail is all about. We’ve developed an artificial intelligence engine that learns your work habits to help you focus, save time and increase your overall email and messaging experience. With Knowmail, you’ll be able to communicate more effectively and get more done in less time! Despite numerous claims that email is on its way out, it has been growing in popularity at a tremendous rate. Today, billions of individuals use emails for both personal and professional purposes, and there are no indications that this communication tool will become obsolete any time soon. According to a recent study by Radicati Group, the number of consumer and business emails sent and received per day will reach 281 billion by the end of this year.	About Sendio’s Opt-Inbox is a proprietary sender management process, acting on messages having cleared email security, which would otherwise be released into a user’s inbox, ensuring that recipients only receive messages from desirable sources, whether from individuals or subscriptions, leaving the new yet undecided sources to the recipient’s discretion in a queue separate from the usually messy quarantine queue. Despite being protected by advanced email security systems, many inboxes continue to be inundated with countless security-cleared messages comprised of persistent sales pitches and marketing communications, distribution lists and bulk sources. Separating harmful messages in the quarantine queue from nuisance and potentially desired ones is increasingly difficult. This can become particularly troublesome for executives and professionals who can’t afford to overlook an important email and find out later they had a desirable message (false positive) in their cluttered quarantine queue.
Platforms Supported Windows Supported Mac Not Supported Linux Not Supported Cloud Not Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Companies in need of an Email Management platform	Audience Companies searching for a solution to manage and eliminate nuisance messages
Support Phone Support Supported 24/7 Live Support Not Supported Online Supported	Support Phone Support Supported 24/7 Live Support Supported Online Supported
API Offers API Not Supported	API Offers API Not Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing No information available. Free Version Supported Free Trial Supported	Pricing $795 per year Free Version Not Supported Free Trial Supported
Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software	Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software

Training Documentation Supported Webinars Not Supported Live Online Supported In Person Not Supported	Training Documentation Supported Webinars Supported Live Online Supported In Person Not Supported
Company Information Knowmail www.knowmail.me	Company Information Sendio Founded: 2003 United States sendio.com/products/opt-inbox/
Alternatives Gmelius	Alternatives Graphus Kaseya
Brevo	QuickFile365 Standss (South Pacific) Pte Limited
CurationSoft	Clear Mail
SmartWriter	Bulletproof Inbox
Mailchimp Transactional Email (Mandrill) Mailchimp View All	OpenText Core Email Encryption OpenText View All
Categories Email Management Supported Email Personalization Supported	Categories Email Management Supported
Email Management Features Data Recovery Not Supported Email Archiving Not Supported Email Deletion Not Supported Email Discovery Not Supported Email Monitoring Supported Email Recall Not Supported Queue Manager Supported Response Management Supported Routing Not Supported Shared Inboxes Not Supported Signature Management Not Supported Spam Blocker Supported Whitelisting / Blacklisting Not Supported	Email Management Features Data Recovery Supported Email Archiving Supported Email Deletion Not Supported Email Discovery Not Supported Email Monitoring Not Supported Email Recall Not Supported Queue Manager Supported Response Management Not Supported Routing Supported Shared Inboxes Not Supported Signature Management Not Supported Spam Blocker Supported Whitelisting / Blacklisting Not Supported
Integrations No info available.	Integrations No info available.
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