GoHighLevel File Attachment Limits for SMS and Email

When you move from tools like ClickUp into a marketing platform, it is essential to understand how attachment limits work so your campaigns send reliably. In this guide, you will learn the exact file size limits for SMS and email attachments in GoHighLevel, plus how to format images and documents correctly so they deliver without errors.

Overview of GoHighLevel Attachment Limits

GoHighLevel uses different systems to send SMS and email, which means attachment limits vary depending on the channel. The platform follows upstream provider rules, and going over these limits can lead to failed messages, slow sending, or missing attachments.

This article focuses strictly on the attachment size guidelines documented by the official GoHighLevel help center so you can configure your files correctly before you upload them.

• SMS/MMS messages have strict size caps.
• Email attachments allow larger files but still require moderation.
• File type and resolution affect how easily messages are delivered.

Use the information below as a practical reference whenever you prepare assets for your GoHighLevel campaigns.

GoHighLevel SMS and MMS Attachment Limits

When sending text messages with media, GoHighLevel relies on carriers that enforce tight restrictions on file size and overall message payload. Staying under these limits helps ensure your messages reach contacts without being blocked or stripped of images.

Standard MMS Size Limits in GoHighLevel

For most MMS messages sent through GoHighLevel, the following general rules apply:

• Single MMS messages should remain under the standard size limit documented by SMS carriers.
• Heavier images and videos can cause delivery failures or message truncation.
• Compressing images and shortening videos greatly improves deliverability.

Because the upstream regulations can change and are sometimes different between carriers, you should always confirm that your media files are well below the typical maximum size for MMS whenever possible.

Best Practices for SMS Attachments in GoHighLevel

Follow these best practices before attaching files to SMS campaigns in GoHighLevel:

1. Use compressed JPG or PNG images rather than very large original files.
2. Avoid long videos; host them externally and send a link instead.
3. Keep filenames simple (no special characters) to reduce potential system conflicts.
4. Test send to your own phone and a teammate’s device before sending at scale.

By preparing attachments carefully, you help GoHighLevel and your carrier deliver consistent results when running SMS outreach.

GoHighLevel Email Attachment Limits

Email allows larger files than SMS, but very heavy attachments still create problems. They slow down sending, clog inboxes, and can trigger spam or security filters. GoHighLevel respects the common limits enforced by email providers and infrastructure.

General Email Size Guidelines in GoHighLevel

When you send emails with attachments through GoHighLevel, keep the following in mind:

• The total size of the message (body + attachments) is subject to provider limits.
• More attachments increase the combined size, not just the individual file size.
• Different inbox providers (such as Gmail or Outlook) may enforce their own caps.

If the combined message size exceeds these thresholds, recipients might never receive the email, or attachments could be removed automatically.

Recommended Attachment Types for GoHighLevel Email

Use these common file types with conservative sizes to keep your GoHighLevel email campaigns safe and efficient:

• PDF for brochures, proposals, and lead magnets.
• JPG/PNG for images, provided they are compressed.
• DOC/DOCX or XLS/XLSX only when necessary, and kept small.

For very large assets such as media kits, full-resolution videos, or extensive image archives, it is more reliable to host the files in cloud storage and include a download link rather than attaching them directly.

How to Prepare Files for GoHighLevel Campaigns

To avoid hitting attachment limits in GoHighLevel, prepare your files before uploading them to a campaign, workflow, or automation.

Step 1: Check the Original File Size

1. Locate the file on your computer.
2. Right-click and choose Properties (Windows) or Get Info (macOS).
3. Verify the size in kilobytes (KB) or megabytes (MB).

If the file is large, plan to compress or resize it before using it in GoHighLevel.

Step 2: Compress or Resize the File

Depending on the file type, use these methods:

• Images: Use an online image compressor or a photo editor to reduce resolution and quality slightly while keeping the visual clear.
• PDFs: Export to a “reduced size” version or use a PDF compressor tool.
• Documents: Remove unused pages, large images, or embedded media.

After compression, confirm the new size and ensure it is comfortably below typical attachment restrictions used in GoHighLevel messaging.

Step 3: Upload and Test in GoHighLevel

1. Open your GoHighLevel account and navigate to the SMS or email composer.
2. Attach the optimized file to a test campaign or a single message.
3. Send the message to a few internal recipients or test numbers.
4. Verify that the files appear correctly and download or display without errors.

Testing helps you confirm that you are operating safely within the attachment expectations of GoHighLevel and your connected providers.

Troubleshooting GoHighLevel Attachment Issues

If your messages are not sending or attachments are missing, use the following quick checks.

Message Fails to Send

• Reduce the attachment size further and resend.
• Remove nonessential attachments and test again.
• Try a different file format that is more compact.

Very large files are a common reason for failed delivery when using SMS and email through GoHighLevel.

Attachment Not Visible to Recipients

• Confirm the attachment was actually uploaded in the message editor.
• Ask the recipient to check any security or spam filters.
• Send a test message to another inbox or phone as a comparison.

If the issue persists, consult the official documentation explaining file size limits for attachments in SMS and email at the GoHighLevel help center: GoHighLevel file size limits article.

Additional Resources for Optimizing GoHighLevel Usage

Staying within attachment limits is only one part of building reliable communications in GoHighLevel. For broader strategy, funnel design, and system optimization support, you can explore expert resources such as Consultevo, which focuses on implementation and performance improvements.

Always refer back to the official GoHighLevel documentation when you design new campaigns that rely heavily on images, PDFs, or other media. By keeping file sizes modest, compressing assets, and testing before wide rollout, you significantly increase deliverability and maintain a smoother experience for your leads and customers.

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