Google and Yahoo have now made DKIM authentication compulsory for all of the incoming emails, hence having these records in place will ensure deliverability of your emails. If you've not verified your domains yet, we request you to do them now to avoid the risk of your emails being blocked by the recipient servers. Here's our documentation on how to add your DKIM records.

 

Emails sent out from @gmail.com sender addresses will not be delivered to any recipient servers.

You can do one of the following:

• Use custom SMTP to allow us to connect to gmail and send out your email via this protocol (ensuring better deliverability). Here's our documentation on how to set up custom SMTP for your sender addresses. 

• If you have your business domain, you can use it instead to send out email. Add your custom domain to Zoho TeamInbox and verify DKIM, your emails will then be properly delivered to any recipient server.