HubSpot Email Bounce Guide: Hard vs. Soft

Understanding how HubSpot categorizes and manages email bounces is essential if you want reliable deliverability, accurate reporting, and a healthy contact database. This guide explains hard and soft bounces, how they work in the tool, and what you can do to fix and prevent them.

What Is an Email Bounce in HubSpot?

An email bounce happens when a message you send cannot be delivered to the recipient’s inbox. In HubSpot reports and contact records, bounces are tracked so you can see which contacts are no longer reachable and why.

Every time you send a marketing email, transactional email, or workflow message, the platform receives a response from the recipient’s mail server. If delivery fails, that response defines the bounce type and the specific bounce reason.

Hard Bounces in HubSpot

A hard bounce is a permanent failure. HubSpot treats this as a signal that the address is not deliverable and should not be emailed again from your account.

Common Hard Bounce Reasons in HubSpot

Typical causes include:

• Invalid email address: The domain or local part is misspelled or does not exist.
• Nonexistent user: The domain exists, but the mailbox has been removed or never existed.
• Syntax errors: Extra spaces, missing @ symbols, or incomplete domains.
• Blocked by server policy: Some receiving servers permanently reject certain senders or domains.

When a message hard bounces, the contact is marked as ineligible for future marketing email to protect your sender reputation.

How HubSpot Handles Hard Bounced Contacts

After a hard bounce, the contact record shows the bounce type and a description. The platform will:

• Automatically stop sending future marketing emails to that contact.
• Flag the address so it cannot be re-enrolled by workflows or lists.
• Include the bounce in email performance metrics, such as bounce rate.

If you later confirm that a valid address was marked incorrectly, you may need to request a review or correction according to current product policies.

Soft Bounces in HubSpot

A soft bounce is a temporary failure. HubSpot records the event but may continue trying to send future emails, depending on the soft bounce pattern.

Typical Soft Bounce Causes in HubSpot

Soft bounces usually indicate short-term or fixable issues, such as:

• Full inbox: The recipient’s mailbox storage is over quota.
• Temporary server issues: The receiving server is down or too busy.
• Message size limits: The email, often due to large images or attachments, exceeds size rules.
• Content or spam filters: The server rejects that specific message but not necessarily the address forever.

The platform may try the send again or continue to send future campaigns until multiple failures suggest a more permanent problem.

How HubSpot Treats Repeated Soft Bounces

If the same contact keeps soft bouncing, HubSpot may start treating that address similarly to a hard bounce to protect your domain and IP reputation. The exact thresholds and policies can evolve, but the goal is always to prevent you from sending to repeatedly undeliverable contacts.

How to Find Bounce Data in HubSpot

You can quickly identify problematic contacts and messages by reviewing built-in reports.

Checking Bounce Rates on Email Performance Pages

For each marketing email, you can view:

• Total bounces.
• Breakdown of hard vs. soft bounces.
• Specific error messages where available.

This helps you compare campaigns, test different lists, and monitor whether deliverability is improving or declining over time.

Viewing Bounced Contacts in HubSpot Lists

You can build active lists based on bounce properties. For example:

1. Navigate to your lists tool.
2. Create a new active list.
3. Filter by email bounce properties, such as type or recent bounce date.
4. Save the list to monitor or export these contacts.

From there, you can decide whether to remove, correct, or segment these contacts differently.

Fixing Bounce Issues in HubSpot

Reducing bounces improves sender reputation, keeps your analytics clean, and helps messages land in the inbox more consistently.

Step 1: Clean and Validate Email Addresses

Start by removing or correcting bad data in your CRM:

• Look for obvious typos, such as “gmal.com” instead of “gmail.com”.
• Remove role-based addresses like “info@” or “support@” if they frequently bounce.
• Use a reputable email verification service before importing large lists.

Once corrected, make sure your forms and imports enforce better validation to avoid similar issues later.

Step 2: Improve List Quality in HubSpot

High-quality lists are more important than high volume. Use internal filters and enrollment criteria to:

• Segment out old or unengaged contacts.
• Focus campaigns on people who recently opted in.
• Honor opt-out signals and unsubscribe requests immediately.

For broader CRM and data strategy help, you can also review resources from partners such as Consultevo to design stronger list management processes that work well with the platform.

Step 3: Monitor Deliverability and Bounce Trends

Regularly review email performance dashboards to track:

• Bounce rate over time.
• Specific campaigns with abnormal bounce spikes.
• Domains or segments that fail more often than others.

If you notice sudden changes, investigate recent list imports, form changes, or template edits that might correlate with the issue.

Step 4: Follow HubSpot Email Best Practices

Deliverability depends on technical configuration and message quality. Make sure you:

• Authenticate your sending domain with appropriate DNS records as recommended in the product documentation.
• Avoid spammy subject lines, deceptive content, or excessive capitalization.
• Keep image sizes reasonable and avoid heavy attachments.
• Offer a clear unsubscribe path in every marketing message.

Following these guidelines helps inbox providers view your emails as trustworthy, which indirectly reduces bounces over time.

When to Remove Bounced Contacts from HubSpot

While some soft bounces resolve on their own, at some point it becomes safer to stop emailing certain contacts entirely.

Removing Hard Bounced Contacts

Because hard bounces are permanent failures, you should:

• Export and archive these contacts if you need records for reporting.
• Delete or exclude them from all future marketing sends.
• Update any integrated tools that might still try to email the same addresses.

This keeps your sending list lean and protects your domain reputation.

Handling Persistent Soft Bounces in HubSpot

For repeated soft bounces, define clear internal rules, such as:

• Stop emailing contacts that soft bounce a certain number of times.
• Move them to a separate re-engagement or verification segment.
• Try an alternate communication channel, such as phone or direct mail, if appropriate.

Document these rules so your team applies them consistently across all campaigns.

Learn More About Bounces in HubSpot

For deeper technical detail, example bounce messages, and the latest policy updates directly from the source, review the original documentation at this HubSpot article on hard and soft bounces. Combining those details with the practical steps above will help you keep your email program healthy and effective.

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