404 Not Found using Sendgrid API

I did another test! I created an account with Elastic Email as per your guidelines and sent the same email template using Elatic Email SMTP.
The same issue is still happening. So that can only mean that somehow your plugin when using a thridparty SMTP is creating an error in the link causing the 404 Not Found.

Here is a response from Sendgrid when I sent them the link that was in the email after receiving it through their SMTP system.

Matt Beers (SendGrid)
Feb 17, 16:09
Hi there,
This doesn’t appear to be a SendGrid issue. The link isn’t using our click tracking, so that wouldn’t be interfering here. It just looks like the link as presented doesn’t point anywhere that exists –
https://www.thevillagewire.com/villageatthepark/network/?email_id=10&user_id=0&demo=1&urlpassed=aHR0cDovL3d3dy50aGV2aWxsYWdld2lyZS5jb20vdmlsbGFnZWF0dGhlcGFyay8%3D&controller=stats&action=analyse&wysija-page=1&wysijap=subscriptions
Please let us know if you have any other questions on this.
Thanks,
Matt Beers

Get in touch with us over here so that we can have a better look at it: https://support.mailpoet.com/wordpress-forums/