Exchange 2013 vs POP System/Google Apps for Work receiving mail in plain text

When Exchange 2010 or Exchange 2013, Coexist between a old pop system or Google apps , You can see the messages sent to those systems from Exchange 2010 or Exchange 2013 servers will receive the email in plain text.

Note : This happens when those external recipients are added as mail contacts in our Exchange Global Address list.

Coz by detault Mail Contacts uses MapiRichTextFormat which old POP system or Google Apps work email cannot understand.

Below parameter by default –

UseMapiRichTextFormat  : Always

To overcome this issue – Set the parameter to Never so that it doesn’t use the MapiRichTextFormat

UseMapiRichTextFormat  : Never

To set for all Mail Contacts –

Get-MailContact -ResultSize Unlimited | Where-Object {$_.primarysmtpaddress -like “*Careexchange.in”} | Set-MailContact -UseMapiRichTextFormat Never

Now you can receive those emails in a common format from Exchange 2010/2013 servers.