Hello @CCoppola ,
Sends from the HubSpot platform can’t be used to determine which contacts are no longer valid. This “list washing” behavior negatively impacts your brand’s sender reputation and chances of reaching the primary inbox, and degrades the HubSpot network shared by all users. To prevent hard bounces in the future, you should:
- Import an opt out list of all contacts that had previously hard bounced, unsubscribed or marked mail as spam in your previous ESP
- Be sure that all contacts used in marketing sends meet the minimim requirements, including that they have verifiably opted into your brand and have been emailed outside of HubSpot in the past 12 months
- You can also use a list validation platform like Kickbox to indetify which contacts may not be valid so they can be removed from your database prior to sending
We are unable to provide an alernate solution for removing contacts from qurantine outside of what is detailed in this help article. Any contact that replies to a 1:1 email send sent via a connected inbox will automatcially be removed from quaratine.