diff --git a/README.md b/README.md
index 1b8c75b..81d705f 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,8 @@ Storage:
 
 ## Building
 
-* `cd cmd/tokidoki && go build`
+* Without PAM backend: `go build ./cmd/tokidoki/`
+* With PAM backend: `go build -tags pam ./cmd/tokidoki/`
 
 ## Running
 
@@ -35,6 +36,17 @@ Using the IMAP authentication backend and the filesystem storage backend
 Tokidoki does not support HTTPS at this time, use a reverse TLS proxy if
 needed.
 
+## Clients
+
+Tokidoki does not yet support all CalDAV/CardDAV features, but tries to support
+the subset to make most major clients work.
+
+The following clients are considered "supported":
+
+* Evolution (contacts & calendar)
+* Thunderbird (calendar) with CardBook extension (contacts)
+* DavX5 (contacts & calendar)
+
 ## Usage
 
 Only a single address book and calendar per user are supported at the moment,
@@ -47,3 +59,13 @@ resources by just pointing them at the server root.
 
 [2]: https://github.com/emersion/go-webdav/issues/26
 [3]: https://datatracker.ietf.org/doc/html/rfc6764#section-6
+
+## Contact
+
+See the [tokidoki project page][4] for up-to-date information. Patches can be
+submitted to the [tokidoki-devel mailing list][5]. For general discussion,
+please use the [tokidoki-discuss mailing list][6].
+
+[4]: https://sr.ht/~sircmpwn/tokidoki
+[5]: mailto:~sircmpwn/tokidoki-dev@lists.sr.ht
+[6]: mailto:~sircmpwn/tokidoki-discuss@lists.sr.ht