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The "via" naming convention in Gmail means that sendgrid.info was used as the Mail From / Envelope Sender domain, changepromo.de being the Header From in the above example (this happens when you use Sendgrid without setting custom domain authentication; see also sendgrid.net, or are using Sendgrid to maliciously spoof a domain). There is a a rule you can set to block all messages with a similar format (which will also include some legit messages from people who just haven't set up custom authentication in their Sendgrid platform). But, not all spam will come from Sendgrid.
I will look when on my laptop what the rule settings are in Gmail that would do this.
stevo_com
Not a hardware thing but Spam.
How can you use GMail blockers to get rid of 'Via' Spam? I'm getting a lot of spam but blocking the senders doesn't work as they continually change email address.
The consistent thing is 'via sendgrid.info' (See screenshot). How do I block sendgrid.info?