'Configuring POP3 with Sendgrid - Can't receive emails but can send them
All I have is an email client (emClient) and a working sendgrid account. When prompted to enter an email address, I can happily put [email protected] and it will confirm that it works with SMTP. I can also send emails using this client. I authenticate with the username apikey and my api key.
However, these emails are permanently stuck in the "outbox" and are constantly sent over and over again, presumably because the client has no confirmation that they were sent. When trying to set up a new account under this domain, I setup my "incoming server" as smtp.sendgrid.net and provide my credentials and it sort-of works (after prompting me for my authentication?).

As you can see, SMTP authenticates just fine and this makes sense as I am seemingly able to send email. However, both IMAP and POP3 when I select them in the "incoming server" are stuck on this "testing" stage until they fail.
Now, if we skip ahead to me sending something out - basically, it works. I receive the email on the destination, it does not get marked as spam and it comes from my domain and my name.
However, when I attempt to receive an email on the [email protected] one, it just doesn't do anything. I don't get an error from gmail that it wasn't delivered, it simply just doesn't get delivered.
For my domain settings, I have the following configured:
Sources
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