Suppress invalid and inactive subscribers

Marketing teams periodically export their subscriber lists to find addresses that keep bouncing, drew spam complaints, or have gone quiet for a long stretch, then suppress each one by hand. Because the checks are tedious and nobody owns them, they get postponed, and the list keeps sending to addresses that damage sender reputation and inflate contact counts. Deliverability problems tend to surface only after campaign performance has already suffered.

On a recurring schedule, the automation pulls the active subscriber list from the email marketing platform together with its hard bounce, repeated soft bounce, and spam complaint records, then runs the remaining addresses through an email verification service to catch invalid ones that have not bounced yet. It flags contacts with no opens or clicks across the defined inactivity window, marks every failing contact as unsubscribed or adds it to the suppression list in the email platform, and writes one row per suppressed contact to an audit log with the reason it failed.

The sending list stays free of invalid, bouncing, and long inactive addresses without anyone auditing it by hand, protecting sender reputation before deliverability starts to slip.