precheck - Mailster Knowledge Base

Email Health Check

Gmail and Yahoo announced updates to its sender authentication policies, effective February 1, 2024. These changes aim to reduce spam by requiring bulk senders to authenticate emails, support easy unsubscription, and maintain a spam complaint rate under 0.3%. Bulk senders are defined as those sending to 5,000 or more Gmail recipients per day. The updates […]

Campaign Precheck

Mailster allows you to quickly test your campaigns with our precheck feature. Consent RequiredTo use the Precheck service Mailster needs to send your campaign to our server. The email which is sent is the same as seen in the preview pane. All personalized information including links, images, attachments, etc. is sent via your current selected […]