I built a workflow that can be used to validate email deliverability using Effibotics Email Validation API (Currently free). You can simply validate hundreds of emails straight to your google sheets or another platform easily
Copy and create a list with emails as on this one n8n Template-Email Validation - Google Tabellen
The trigger checks for any updates in the number of rows that are present in a sheet and updates the verified emails on Google sheets
Once you update a new cell, the new data is read, and the email is checked for its validity before. The results are then updated in real-time on the sheet.
Here is the link to the template
Happy Emailing!