Inbox placement can be a difficult to pinpoint the exact issue. Email clients have a number of different algorithms to calculate a spam score on your email. The email will either be in your junk folder or in quarantine in the email server.

AVOID SPAM WORDS

There are a number of spam words that trigger the spam filter. Avoid word like "Free" in your subject and the body of the email. HubSpot compiled 90+ words to avoid. 

Adestra will provide guidance on your subject line and let you know if any of the typical spam words are present.

REVIEW EMAIL QUARANTINE AND UPDATE MAIL RULES

If the contact cannot locate in the junk mail, the email server is blocking the message. Often email servers will have spam detection and quarantine messages before landing in your inbox. The tech team release the messages in message trace, and route it to the inbox.

WHITELIST IPS

OUTLOOK 365

Go to the quarantine section in message trace, and release the messages to the inbox. The tech can do this in the short term to get messages they missed.

For a long term solution., the tech team needs to create a rule always to have messages from IP addresses listed above land in the inbox. The tech team can change the mail flow rules. Set the Spam Confidence Level (SCL) to -1 for all emails coming from the IP ranges listed above, and also set the message header to X-MS-Exchange-Organization-BypassClutter with the value true.