Verifier - Weed out disposable, non-existent domains or invalid emails.
Sheetcast - Sheetcast’s patented platform enables our developers to design and deploy highly sophisticated custom SaaS web apps in just days or weeks, at a fraction of the cost of traditional custom software.
Validator.pizza - Free API to block 🗑 disposable emails
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
Antideo - Email, IP address and phone number validation API service
Lucidchart Diagrams for G Suite - Lucidchart provides collaborative online diagramming to make it easy to draw flowcharts, org charts, wireframes, UML, mind maps and more. Work together in real time with your team and clients!