diff --git a/PLAYSTORE.txt b/PLAYSTORE.txt
index 5ff47fa898..450e6336ef 100644
--- a/PLAYSTORE.txt
+++ b/PLAYSTORE.txt
@@ -2,6 +2,8 @@ FairEmail is easy to setup and works with virtually all email providers, includi
FairEmail might be for you if you value your privacy.
+FairEmail does not support non-standard protocols, like Microsoft Exchange Web Services and Microsoft ActiveSync.
+
Main features
* Fully featured
@@ -42,6 +44,7 @@ This app starts a foreground service with a low priority status bar notification
Secure
* No data storage on third party servers
+* Using open standards (IMAP, SMTP, OpenPGP, etc)
* Safe message view (styling, scripting and unsafe HTML removed)
* Confirm opening links, images and attachments
* No special permissions required
diff --git a/README.md b/README.md
index f65a44b392..6203711c3b 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,8 @@ FairEmail is easy to setup and works with virtually all email providers, includi
FairEmail might be for you if you value your privacy.
+*FairEmail does not support non-standard protocols, like Microsoft Exchange Web Services and Microsoft ActiveSync.*
+
## Main features
* Fully featured
@@ -61,6 +63,7 @@ This app starts a foreground service with a low priority status bar notification
## Secure
* No data storage on third party servers
+* Using open standards (IMAP, SMTP, [OpenPGP](https://www.openpgp.org/), etc)
* Safe message view (styling, scripting and unsafe HTML removed)
* Confirm opening links, images and attachments
* No special permissions required
diff --git a/metadata/en-US/full_description.txt b/metadata/en-US/full_description.txt
index bbb63c47a3..fbed59f733 100644
--- a/metadata/en-US/full_description.txt
+++ b/metadata/en-US/full_description.txt
@@ -2,6 +2,8 @@ FairEmail is easy to setup and works with virtually all email providers, includi
FairEmail might be for you if you value your privacy.
+FairEmail does not support non-standard protocols, like Microsoft Exchange Web Services and Microsoft ActiveSync.
+
Main features
* Fully featured
@@ -42,6 +44,7 @@ This app starts a foreground service with a low priority status bar notification
Secure
* No data storage on third party servers
+* Using open standards (IMAP, SMTP, OpenPGP, etc)
* Safe message view (styling, scripting and unsafe HTML removed)
* Confirm opening links, images and attachments
* No special permissions required