[jacquesm]

Yes, it was, I checked the headers.

[wpietri]

Thanks. Then maydemir's explanation doesn't hold up for me. The Mailscarp page doesn't say anything about the features he describes. It seems like the simpler explanation is that they just tried spamming people and got caught. I hope that's not the case, and I hope they'll respond to questions to straighten things out.

[jacquesm]

Hard to argue with these:

ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@mailscarp.com header.s=api header.b=DnugwplP; spf=pass (google.com: domain of [e-mail] designates 104.243.65.3 as permitted sender) smtp.mailfrom=[e-mail]; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=mailscarp.com Return-Path: <[e-mail]>