User reports an error message stating the email's security certificate is not valid

  • 1
  • Problem
  • Updated 1 month ago
  • Acknowledged
Multiple users are getting error messages upon trying to open our emails. See attached. Why and how can we fix?
Photo of Kimberley Williams O'Quinn

Kimberley Williams O'Quinn

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Posted 1 month ago

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Photo of Zach Sharpe

Zach Sharpe, Employee

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Hi Kimberly,

Certificate / Fraud flagging can be the result of a few things, and it typically can help to see who the to and from addresses are to determine if they are similar domains.

If you are seeing issues emailing to and from a private domain (i.e.: it typically can help to whitelist our sending IP addresses. Those are found here:

Also, updating your SPF record to align with Emma sending can help as well. For more on what your SPF record is see the following:'s_an_SPF_record%3F

For instructions on setting this up, we've put together a guide here:

Lastly, we offer general tips on successful sending here:

I hope this helps improve sending and please let me know if I can answer any questions!