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March 14, 2019

Cannot Send Emails

If you are experiencing issues with sending emails, make sure your network connection is stable and you have a strong signal. If you use Wi-Fi, please try connecting to another network to see if it resolves the issue.

After sending an email, please don’t immediately quit Spark. It supports the Undo option, which is available for the 5 seconds after you press Send. The app actually sends an email only after this timed delay.

If your email is stuck in the Outbox folder and the solutions above don’t work, please contact our support team and provide the detailed app logs which will speed up the investigation.


  1. Click Spark at the top left of your screen.
  2. Open Preferences.
  3. Tick Detailed Logging.
  4. Try to send an email one more time. If it fails to send, follow the steps below.
  5. Click Help at the top left of the screen.
  6. Select Send Feedback.
  7. A new email window will appear. In the Subject: line write, “Can’t send emails.”
  8. In your message, please specify the email account from which you are trying to send emails and the email subject of the message which can’t be sent.
  9. Save this message as a draft and send it via browser or another email client. We’ll get in touch soon.
  1. Tap the menu icon  at the top left.
  2. Open Settings > Support.
  3. Enable the Detailed Logging toggle.
  4. Try to send an email one more time. If it fails to send, follow the steps below.
  5. Open Settings > Support > Send Feedback.
  6. A new email window will appear. In the Subject: line write, “Can’t send emails.”
  7. In your message, please specify the email account from which you are trying to send emails and the email subject of the message which can’t be sent.
  8. Save this message as a draft and send it via browser or another email client. We’ll get in touch soon.
  1. Tap the menu icon  at the top left.
  2. Select Settings > Support.
  3. Enable the Detailed Logging toggle.
  4. Try to send an email one more time. If it fails to send, follow the steps below.
  5. Open Settings > Support > Send Feedback.
  6. A new email window will appear. In the Subject: line, write “Can’t send emails.”
  7. In your message, please specify the email account from which you are trying to send emails and the email subject of the message which can’t be sent.
  8. Save this message as a draft and send it via browser or another email client. We’ll get in touch soon.
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