emails in spam

[ras-construction]

Hi everyone! Does anyone know why 50% of the emails I send end up in spam folder? Is frustrating when my customers tell me that they didn't received my email. But if they look in the spam folder, is there. Can you help??Many thanks guys! Chris

[SKaero]

Spam filtering is done by the mail server not RoundCube, my guess is you have to set to low of spam score so valid emails are being marked as spam. You should ask your email provider for help.

[crasheg]

Check whether there is a PTR record for your domain.
Configure signature DKIM.
Check your IP blacklisted http://mxtoolbox.com/SuperTool.aspx