When messages aren't reaching the inbox troubleshooting can be overwhelming. We want to share five areas you can check to fix your delivery problems.| postmarkapp.com
Follow-up on the recent phishing attack targeting PyPI users.| blog.pypi.org
Sender Policy Framework lets domain owners tell the world which servers can send email on their behalf. Here’s how it works.| postmarkapp.com
Email authentication (or email validation) is the process used by receiving mail servers to verify the legitimacy of an email message.| postmarkapp.com
DMARC is an email security standard that allows domain owners to monitor who’s sending email using their domain & tells receivers how to deal with emails that aren’t sent from authenticated sources.| postmarkapp.com
DKIM (DomainKeys Identified Mail) is an email authentication method that uses public-key cryptography to sign emails and verify that the message body and attachments were not altered in transit.| postmarkapp.com