SendGrid Integration with Kentico Email

Have you read this article?

Additionally, I think you can just set up a SMTP server:

• The SendGrid SMTP server address is smtp.sendgrid.net.
• The username used for SMTP authentication is always apikey.
• The password to use is the value of the API key you created in SendGrid.
• Do not use port 25. Use port 587 instead.

From this article

Thank you very much Zach!

We do use SendGrid as the default SMTP server in the Kentico setting with batch size 3000 and archive email days 365, but it's too slow. It says the emails are distributed one by one to the available server. From what I read we need to use SendGrid API to speed up the process. We don't want to send one by one. Any suggestions how we should configure inside Kentico to speed up the emails? Adding more SMTP servers? Network guys don't want to use pickup directory option.

I would think you would be able to customize the first article I linked to send the emails how you want.

I thought the batch size was how many emails it sends at once each time the scheduled task runs.