In general, these situations are caused by complex antiSPAM filters on the destination servers that incorrectly mark your mail.
The servers to which you send emails can have different spam filtering systems that are not under our control. Unfortunately, there is no general solution applicable to these situations.
To improve the chances of delivering your mail in the recipient's Inbox, we recommend using SPF and DKIM. Both can be activated from cPanel >> Email authentication
When you try to send emails from Outlook, you receive the following message: An unknown error...
When you try to send emails, the following message will be returned to you: Sending' reported...
When trying to send/receive emails you receive one of the following messages: The server could...
This problem originates from the inability of Outlook to download a particular email from the...
In the shared hosting environment, the maximum number of attachments that can be sent in an email...
