Status: No Issues
The problem with Gmail should be resolved. Google apologizes for the inconvenience and “thanks you for your patience and continued support. Please rest assured that system reliability is a top priority at Google, and we are making continuous improvements to make our systems better.”

February 5, 2019 11:24:00 AM PST
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Status: Service disruption
Gmail service has already been restored for some users, and Google expects a resolution for all users in the near future. Please note this time frame is an estimate and may change.

February 5, 2019 10:40:00 AM PST

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Google has just noted they are investigating reports of an issue with Gmail. They will provide more information shortly. The affected users are able to access Gmail, but may experience delays in sending or receiving messages.

Users may experience delays accessing emails from IMAP, as well as being unable to download or upload attachments in Gmail.

February 5, 2019 10:10:00 AM PST
https://www.google.com/appsstatus