How to set an auto reply (autoresponder/vacation)?

Only one autoresponder required!

Roundcube

Log in to your account, then choose the Settings in the menu and the Filters tab, choose the active Set of filters (if there is none, click the + sign, enter any name and click Save).

Settings option to choose
Filters option
Add or delete a filter

Such setting of the autoresponder will send replies only to messages that are not classified as SPAM.

Save the filter

To turn off the automatic reply, choose the active filter set from the Filters menu, then click on the filter with the autoresponder and check Filter disabled. Confirm by clicking Save. The filter enables advanced automatic replies depending on different conditions.

Click on image to enlarge)

Example of a ready-made autoresponder