In certain cases, SendGrid will “Drop” a message to a specific email address in order to protect your sender reputation. SendGrid keeps Email Lists to track bounces, spam reports, and unsubscribes for each of our users. If a user sends a message to an email address that exists on one of these lists within their account, SendGrid will automatically drop the message (i.e., not send to the address).
SendGrid users can always delete entries from these lists if an email address is erroneously placed on one or more of them. Users can accomplish this by mousing over the entry for an address and clicking the “Delete” button.
On the Global Statistics Dashboard, the Drops can also be identified as Repeated Bounces, Repeated Spam Reports, Repeated Unsubscribes and Invalid Emails:
You will also find drops in your Email Activity. Clicking on the event, will show more details about it, including the reason for which the email was dropped.
If the email address is on the Unsubscribe list the reason will say "Unsubscribed Address"; if on the Spam report list, it will say "Spam Reporting Address" and if on the Invalid Emails list, it will say "Invalid".
If you would like us to attempt to deliver messages to a specific address again, please delete that address from the suppression list. On the suppression list page, you can remove an address from the bounces list. Then you will be able to send future messages without us intervening on your behalf; you're essentially telling us that this address should be fine, but something went wrong and you'd like to try again.
SendGrid cannot re-send messages that have been dropped or appear on suppression lists, but will attempt future deliveries once the address has been removed from the list and is sent to again.
Since SendGrid has my back, and my reputation is not affected by these Drops, why should I care about removing them?
Your lists will be cleaner and even if we do drop the messages intended to addresses that are already on one of the suppression lists, we do accept and process these requests before we drop them. Since this is the case, dropped emails will still count towards your monthly plan email limit.
We recommend using the Web API to export any of the suppression lists. Once you export that data, you can use it to clean your distribution lists.
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