Sending to addresses that bounce or complain damages your sender reputation. eSMS Mail manages this for you.
What gets suppressed
- Hard bounces — the address doesn't exist or permanently rejected the mail. It's added to your suppression list automatically.
- Complaints — the recipient marked your mail as spam.
What suppression does
Future sends to a suppressed address are skipped before they ever leave the platform, so you stop hitting dead mailboxes and spam traps. This is per-account.
Best practice
Let people unsubscribe easily, remove inactive recipients, and never re-add addresses that bounced. A clean list is the cheapest deliverability insurance there is.