The IMAP extension is missing from your PHP installation.

The IMAP extension is missing from your PHP installation.

In case this kind of error isn’t pretty self-explanatory, your php instance doesn’t contain the imap extension.
If you have access to command line, following commands should install php imap on your server:

If you are on CentOS / RedHat / Fedora or derivatives:
yum install php-imap

If you are on a Debian / Ubuntu or derivatives:
apt-get install php-imap

If no packages are found, then consult your distro manual.
In case you are on a host where you don’t have command line access, if you have CPanel/WHM access, you can use EasyApache to compile php with imap extension.

Otherwise, you have to contact your host about the issue.

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