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Why does Gmail say my signature is too long?

Gmail has a character limit for signatures. Here's how to fix the "signature too long" error, starting with the most common cause.

Written by Bluejay Labs

Why does Gmail say my signature is too long?
Gmail has a maximum character limit for signatures, and complex HTML signatures with lots of elements can exceed it.

How do I fix it?
First, try this: during installation, click Open in new tab before copying your signature to your clipboard. This prevents extra page elements from being copied along with the signature.

If that doesn't work, try:

  • Reducing the number of social media icons (aim for 10 or fewer)

  • Shortening or removing your disclaimer

  • Switching to the Basic style, which uses less code than other themes

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