Email deliverability concerns the ability to reach recipients' inboxes. Bounces, blocking and spam-folder placement can prevent that outcome.[1] It is a different question from whether a sending system submitted a message or a receiving server technically accepted it.
A store whose newsletter is absent from inboxes should look beyond the sent status. Check authentication, address quality, complaints and message relevance. Delivery or open-rate figures do not directly reveal where every message landed. Investigate affected recipient services and error reports rather than immediately emailing the entire customer list again.
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Compiled with AI assistance using public sources. General explanation, not individual legal or tax advice. Describing a concept does not mean Zoloo offers it as a feature.