This task can be performed using RealMail
Email Validation for SaaS
Best product for this task

RealMail
marketing
RealMail is the ultimate email validation tool for SaaS. It helps you increase sign-ups and customer retention by preventing errors, inappropriate addresses, and abuse. With real-time validation, customizable settings, and a user-friendly interface.

What to expect from an ideal product
- Checks email addresses in real-time during sign-up to stop fake accounts before they're created
- Blocks disposable email services and temporary addresses commonly used by spammers
- Verifies the email domain exists and can actually receive messages
- Catches typos and common mistakes in email addresses to prevent bounces
- Filters out known spam patterns and suspicious email formats to keep your user base clean