Why did my bounces jump in SureContact?

The SureContact help pages give 4 common reasons. The first to rule out: A contact is marked Bounced when the SMTP provider sends SureContact a bounce notice, so bounce counts follow what the provider reports.

Reach · Are people seeing me?

Is it broken, or just quiet?

A number can fall because fewer people came, or because something stopped counting them. Below are the causes the SureContact help pages give, and how to check each one yourself.

What causes it?

  1. A contact is marked Bounced when the SMTP provider sends SureContact a bounce notice, so bounce counts follow what the provider reports.

    In the SureContact help: When SureContact receives a bounce notification from your SMTP provider Contact Statuses, read 2026-11-12.

  2. Repeated soft bounces can be classified as permanent, so a contact can move to Bounced after several failed sends rather than the first.

    In the SureContact help: Repeated soft bounces that get classified as permanent Contact Statuses, read 2026-11-12.

  3. A brand-new sending domain has no sending history, so if a large volume is sent from it straight away, mailbox providers can treat it as spam and bounce or filter the mail.

    In the SureContact help: A brand-new sending domain has no sending history and no reputation: so if you connect it and immediately blast thousands of emails, providers often assume it's spam and start bouncing or filtering your messages, even if your content and list are perfectly fine. Warming Up a New Sending Domain, read 2026-11-12.

  4. SureContact's own guidance reads a high bounce rate as a sign of a bad or old list.

    In the SureContact help: “bounce rate” points to a bad/old list Warming Up a New Sending Domain, read 2026-11-12.

How do I check it myself?

  1. Filter a campaign's recipients by bounced to see which addresses bounced.

    In the SureContact help: Bounced – filter by: Yes / No. Campaign Analytics Guide, read 2026-11-12.

  2. Review bounced contacts and update or remove the addresses that are no longer valid.

    In the SureContact help: It’s recommended to review bounced contacts and update or remove invalid ones. Contact Statuses, read 2026-11-12.

How does SureContact work with Feder?

  • Connect SureContact to Feder and it joins your Reach apps.
  • When you connect SureContact, Feder checks the connection straight away and shows Connected only when that check passes. If a reading cannot be taken later, Feder shows it as not read, never as zero.

Some numbers are too quiet to judge daily, such as a form filled in a few times a week. Until there is enough of your own history to judge a change, Feder says it is still learning and scores nothing, rather than guessing.

See whether you can trust the numbers in SureContact, one of your Reach apps. Feder only reads. It never changes anything in SureContact.

Where do these answers come from?

Every cause and check on this page comes from the SureContact help pages, quoted above with the date we read them. Last reviewed 2026-11-12. We read them again by 2027-11-12. If one changes, this page changes or comes down.

Know the day a number breaks, not the month after.