Slack Productivity Error Code msg_too_long: How to Fix It
Easy 2-5 minutes Low Severity
Verified June 2026
- Error Code
- msg_too_long
- Brand
- Slack
- Product Type
- productivity
- Severity
- Low
- DIY Difficulty
- Easy
- Estimated Fix Time
- 2-5 minutes
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How to Fix Error Code msg_too_long
-
Check Your Message Length
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Break Message Into Multiple Posts
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Use Code Snippets for Large Text
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Upload as a File
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Use External Links
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Summarize Key Points
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When to Call a Professional
This is a user-level issue that doesn't require professional help. If you consistently need to share very large documents, consider asking your Slack administrator about integrating document management tools.Frequently Asked Questions
What is the character limit for Slack messages?
Slack messages have a 40,000 character limit. This includes all text, formatting, and special characters in your message.
Can I increase Slack's message character limit?
No, the 40,000 character limit is set by Slack and cannot be changed by users or administrators. You must use alternative methods to share longer content.
Do code snippets count toward the message limit?
No, text snippets created through Slack's snippet feature have their own separate character limits and don't count toward the 40,000 character message limit.
What happens if I try to send a message that's too long?
Slack will display the msg_too_long error and prevent you from sending the message. You'll need to shorten it or use an alternative sharing method.
Can I paste large amounts of code in Slack?
For large code blocks, use Slack's code snippet feature instead of regular messages. This provides better formatting and bypasses the character limit.