Grammarly - Clear, effective, mistake-free writing everywhere you type.
NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
Cognifyd - The smart editor that helps you write business content
Email List Verify - The Fastest Way to Improve Email List Deliverability and ROI
Kibin - Professional Proofreading as a Service
ZeroBounce - Removes invalid emails from your list to prevent email bounces from ruining your deliverability.