How to fix Gmail Server: Oops… a server error occurred and your email was not sent. ( Error #707)

Gmail is one of the most popular free email clients available on the Internet. Gmail is a product of Google and has over 425 million users around the world. But Gmail is not perfect and it seems common for users to have the “gmail error 707” and need to know how to fix this error message. The message that Gmail shows says “Oops… a sever error occurred and your email was not sent. ( error 707 )” We’ll explain what the Gmail Error 707 means and how to solve this issue.

Recommended: How to fix Gmail Server Error #502


What is Error 707 on Gmail

For Gmail users that are attempting to send an email the error 707 on Gmail will show up because of some labs that are feature on Google Gmail. Messages like

“Oops… the system encountered a problem (#707)” or  “Server error occurred and your email was not sent (error 707)”. Now that you know what error 707 is caused from, we’ll help get oops a server error occurred and your email was not sent 707 solved. Just follow the instructions below.


How to Fix Gmail error 707
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  1. Sign into your Gmail Account
  2. Select on the Gear Box and choose settings.
  3. Switch to “Lab” tab under Settings
  4. Search by typing in “Background send”
  5. Disable this lab feature.

These steps should get oops a server error occurred and your email was not sent 707 solved.
If the same Gmail Error 707 keeps showing up after it has been fixed once already, follow these instructions: 

  1. Update the web browser
  2. Clear cache and cookies.
  3. Disable any browser add-ons/extensions
  4. Restart the web browser
  5. Try starting Gmail without any labs by using (
  6. Temporarily disable your virus checker

Uses of Gmail “Background Send” Lab

Generally when users send an email on Gmail, it’s recommended to wait until the email has been sent before leaving the page. But with the “Background send” lab, it will allow users to exit the page and the email will still be sent.

So a Gmail User can do other works (go to inbox, read messages, clear spam) without wasting the time. This is the main use of “Background Send” Lab in Gmail. But it also create Some Gmail Error 707 in rare cases.


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