I ran a check across our spamtraps. Approximately 4% of the messages we received yesterday had the x= field.
Senders that included it were Gmail, Microsoft, Apple, Mailchimp, Mailgun, Splio, dotdigital, HubSpot, Mailjet, Selligent, Campaigner, GetResponse, Salesmanago, TurboSMTP, Postmark, Aweber, Sendpulse, SocketLabs, Mailup, and a few smaller ESPs. -- Atro Tossavainen, Founder, Partner Koli-Lõks OÜ (reg. no. 12815457, VAT ID EE101811635) Tallinn, Estonia tel. +372-5883-4269, https://www.koliloks.eu/ _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
