Why are my CalShare notifications being flagged as SPAM?

There is an ongoing issue with CalShare notifications being flagged as SPAM due to SharePoint Online using the single address no-reply@sharepointonline.com to send notifications for all O365 tenants across the world. This address has been used for repeated phishing, so it’s developed a poor reputation from email service providers. 

 

CalShare collaborators may receive warning banners in their bMail such as: 

 

This message seems dangerous

Similar messages were used to steal people's personal information. Avoid clicking links, downloading attachments, or replying with personal information.

Current work-around

If receiving SharePoint email notifications is critical to your work, as a work-around, you can add a Gmail filter to ensure messages from no-reply@sharepointonline.com are delivered to your Inbox and not Spam.  

 

- Go to: Settings > Filters and Blocked Addresses 

- Scroll to bottom and click "Create a new filter" 

- For "From" insert "no-reply@sharepointonline.com" 

- Click "Create filter" 

- Check "Never send it to Spam" 

- Click "Create filter" 

You will now see a new filter showing: 

Matches: from:(no-reply@sharepointonline.com) 

Do this: Never send it to Spam

 
Note: If you decide to set a filter, please be especially cautious and alert about phishing attempts coming from that address.