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High bounce rate on a campaign

What a normal bounce rate looks like, why Microsoft inboxes bounce in bulk, and how to handle a freshly imported list.

2 min read

In short: around 1% of sends bouncing is normal. A sudden spike is usually Microsoft inboxes wanting a DMARC record, or a freshly imported list.

check in this order

Is it really high

  1. Go to Marketing › Email Campaigns, then open the campaign.
  2. Under Performance, check Bounced against your recent campaigns.

Around 1% is par for a healthy list. A bounce is an inbox refusing the email outright. See read your email campaign report.

Mostly Hotmail and Outlook

Open Failed on the report and look at the addresses. When the bounces are mostly Hotmail, Outlook, Live and MSN, Microsoft is rejecting your mail because your sending domain has no DMARC record.

  1. Ask whoever manages your domain's DNS to add a DMARC record: a TXT record named _dmarc at your domain, with the value v=DMARC1; p=none;
  2. Check your domain is still authenticated in Domains, as in emails going to spam.
  3. Send your next campaign and check Bounced again.

A freshly imported list

An old export from another system is full of dead addresses, and every one of them bounces.

Import the list with its own tag, so you can watch it separately: see import guests from a CSV. Expect a higher bounce rate on the first send to that tag, and leave the addresses that bounced out of future sends.

Check it worked

Your next campaign's Delivered sits around 98% or higher.

If that does not fix it

Email support at agent@stampede.ai with:

  • The campaign name.
  • A screenshot of Performance and a few addresses from Failed.

Good to know

  • Bounces and spam are different problems: a bounce never arrives, spam arrives and is filed. For spam, see emails going to spam.
  • One bad campaign does not harm your account, but repeatedly sending to a dirty list hurts your sender reputation.
  • Sending from a free address makes all of this worse. See sending from a free email address.
  • Only Admin, Moderator and Marketing can see Marketing.

Still stuck, or have account-specific questions?

  1. Log in to stampede.aiWith your usual details.
  2. Hold Command, press /On Windows, hold Control (Ctrl) and press /.
  3. Ask the agentIt answers about your own venues and account.
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