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Suppression-List: Marketing Glossary

Suppression List

Definition

A suppression list in email marketing excludes certain addresses for campaign effectiveness and sender reputation.

Here are some common reasons to add email addresses to a suppression list:

  • Hard bounces: Emails that consistently fail delivery due to invalid addresses or inactive mailboxes.
  • Soft bounces: Temporary delivery issues like a full mailbox. These might require a retry after a specific timeframe.
  • Receivers who mark your emails as spam can file complaints about them.
  • Unsubscribe requests: Recipients who have chosen to opt-out of your email list.

Using suppression lists effectively offers several benefits:

  • Improved deliverability: By excluding undeliverable and unengaged addresses, you increase the likelihood of your emails reaching active inboxes.
  • Reduced spam complaints: Maintaining a clean list minimises the chance of recipients mistakenly marking your emails as spam.
  • Enhanced sender reputation: ISPs (Internet Service Providers) consider spam complaints and bounce rates when determining your sender score. A healthy suppression list contributes to a positive reputation.

How You Can Use

Imagine you run an email marketing campaign for a travel agency. During the campaign, you receive several hard bounces for invalid email addresses and a few spam complaints.

By adding these addresses to your suppression list, you ensure they won’t be included in future campaigns. This improves deliverability and protects your sender reputation by reducing the risk of further spam complaints.

Key Takeaways

  1. Suppression lists exclude undeliverable or unengaged email addresses.
  2. Maintain suppression lists to improve deliverability and sender score.
  3. Include hard bounces, spam complaints, and unsubscribe requests.
  4. Regularly review and update your suppression list.
  5. A clean list fosters better engagement and reduces spam complaint.

FAQs

What is a suppression list in email marketing?

A suppression list is a list of email addresses that are excluded from receiving specific email campaigns to maintain compliance and improve deliverability.

Why is a suppression list important?

It ensures compliance with regulations, reduces spam complaints, and improves the effectiveness of email marketing campaigns.

Who should be included in a suppression list?

Recipients who have unsubscribed, marked emails as spam, or requested not to receive certain types of emails should be included.

How do suppression lists improve deliverability?

By removing uninterested or disengaged recipients, suppression lists help improve the overall engagement and deliverability rates.

Can I manually manage a suppression list?

Yes, but it is often more efficient to use email marketing software that automatically updates and manages suppression lists.

Is it legal to email someone on the suppression list?

No, sending emails to someone who has opted out or unsubscribed is against regulations and can lead to legal penalties.

How can I ensure my suppression list is up-to-date?

Use email marketing software that automatically updates the suppression list based on unsubscribe requests and spam complaints.

What happens if I don’t use a suppression list?

You risk violating email marketing laws, increasing spam complaints, and damaging your sender's reputation.

Can suppression lists be used for all types of emails?

Yes, suppression lists can be applied to promotional, transactional, and informational emails to ensure compliance and relevance.

How often should I review my suppression list?

Regularly review your suppression list to ensure it is current and accurately reflects the preferences of your recipients.

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