NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
VoiceMaker - Voicemaker is a web application with which you can convert your texts into audio by simply importing the text onto the dedicated text box.
Email List Verify - The Fastest Way to Improve Email List Deliverability and ROI
Notevibes - Online Text to Speech Converter with 57 natural voices. Download your files as mp3 and Wav. For business and personal usage.
ZeroBounce - Removes invalid emails from your list to prevent email bounces from ruining your deliverability.
Free TTS - Free TTS is a web application that can convert any text into audio.