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-rw-r--r--doc/aerc-imap.5.scd6
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/aerc-imap.5.scd b/doc/aerc-imap.5.scd
index e6a4460..478dbae 100644
--- a/doc/aerc-imap.5.scd
+++ b/doc/aerc-imap.5.scd
@@ -82,6 +82,9 @@ available:
 	By default, the system tcp socket settings are used.
 	If keepalive-period is specified, this option defaults to 3 probes.
 
+	This option is only supported on linux. On other platforms, it will be
+	ignored.
+
 *keepalive-interval*
 	The interval between subsequential keepalive probes, regardless of what
 	the connection has exchanged in the meantime. Fractional seconds are
@@ -90,6 +93,9 @@ available:
 	By default, the system tcp socket settings are used.
 	If keepalive-period is specified, this option defaults to 3s.
 
+	This option is only supported on linux. On other platforms, it will be
+	ignored.
+
 # SEE ALSO
 
 *aerc*(1) *aerc-config*(5)