diff --git a/CHANGELOG.md b/CHANGELOG.md
index d831809..c9d2aef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - Go client for REST API
 - Monitor feature: lists messages as they arrive, regardless of their
   destination mailbox
+- Make `@inbucket` mailbox prompt configurable
 
 ### Fixed
 - No longer run out of file handles when dealing with a large number of
diff --git a/config/config.go b/config/config.go
index f444a68..01e909e 100644
--- a/config/config.go
+++ b/config/config.go
@@ -39,6 +39,7 @@ type WebConfig struct {
 	TemplateCache  bool
 	PublicDir      string
 	GreetingFile   string
+	MailboxPrompt  string
 	CookieAuthKey  string
 	MonitorVisible bool
 	MonitorHistory int
@@ -139,6 +140,7 @@ func LoadConfig(filename string) error {
 		{"web", "template.dir", &webConfig.TemplateDir, true},
 		{"web", "public.dir", &webConfig.PublicDir, true},
 		{"web", "greeting.file", &webConfig.GreetingFile, true},
+		{"web", "mailbox.prompt", &webConfig.MailboxPrompt, false},
 		{"web", "cookie.auth.key", &webConfig.CookieAuthKey, false},
 		{"datastore", "path", &dataStoreConfig.Path, true},
 	}
diff --git a/etc/devel.conf b/etc/devel.conf
index 5e7e536..1e765d4 100644
--- a/etc/devel.conf
+++ b/etc/devel.conf
@@ -73,6 +73,10 @@ ip4.port=9000
 # Name of web theme to use
 theme=bootstrap
 
+# Prompt displayed between the mailbox entry field and View button. Leave
+# empty or comment out to hide the prompt.
+mailbox.prompt=@inbucket
+
 # Path to the selected themes template files
 template.dir=%(install.dir)s/themes/%(theme)s/templates
 
diff --git a/etc/docker/defaults/inbucket.conf b/etc/docker/defaults/inbucket.conf
index a7aafed..8825e87 100644
--- a/etc/docker/defaults/inbucket.conf
+++ b/etc/docker/defaults/inbucket.conf
@@ -75,6 +75,10 @@ ip4.port=10080
 # Name of web theme to use
 theme=bootstrap
 
+# Prompt displayed between the mailbox entry field and View button. Leave
+# empty or comment out to hide the prompt.
+mailbox.prompt=@inbucket
+
 # Path to the selected themes template files
 template.dir=%(install.dir)s/themes/%(theme)s/templates
 
diff --git a/etc/homebrew/inbucket.conf b/etc/homebrew/inbucket.conf
index dd09fef..bebd42a 100644
--- a/etc/homebrew/inbucket.conf
+++ b/etc/homebrew/inbucket.conf
@@ -75,6 +75,10 @@ ip4.port=9000
 # Name of web theme to use
 theme=bootstrap
 
+# Prompt displayed between the mailbox entry field and View button. Leave
+# empty or comment out to hide the prompt.
+mailbox.prompt=@inbucket
+
 # Path to the selected themes template files
 template.dir=%(themes.dir)s/%(theme)s/templates
 
diff --git a/etc/inbucket.conf b/etc/inbucket.conf
index 6918d9e..e8e16d4 100644
--- a/etc/inbucket.conf
+++ b/etc/inbucket.conf
@@ -73,6 +73,10 @@ ip4.port=9000
 # Name of web theme to use
 theme=bootstrap
 
+# Prompt displayed between the mailbox entry field and View button. Leave
+# empty or comment out to hide the prompt.
+mailbox.prompt=@inbucket
+
 # Path to the selected themes template files
 template.dir=%(install.dir)s/themes/%(theme)s/templates
 
diff --git a/etc/unix-sample.conf b/etc/unix-sample.conf
index cdb21c3..240923f 100644
--- a/etc/unix-sample.conf
+++ b/etc/unix-sample.conf
@@ -73,6 +73,10 @@ ip4.port=80
 # Name of web theme to use
 theme=bootstrap
 
+# Prompt displayed between the mailbox entry field and View button. Leave
+# empty or comment out to hide the prompt.
+mailbox.prompt=@inbucket
+
 # Path to the selected themes template files
 template.dir=%(install.dir)s/themes/%(theme)s/templates
 
diff --git a/etc/win-sample.conf b/etc/win-sample.conf
index 0227176..398dbd0 100644
--- a/etc/win-sample.conf
+++ b/etc/win-sample.conf
@@ -73,6 +73,10 @@ ip4.port=9000
 # Name of web theme to use
 theme=bootstrap
 
+# Prompt displayed between the mailbox entry field and View button. Leave
+# empty or comment out to hide the prompt.
+mailbox.prompt=@inbucket
+
 # Path to the selected themes template files
 template.dir=%(install.dir)s\themes\%(theme)s\templates
 
diff --git a/themes/bootstrap/templates/_base.html b/themes/bootstrap/templates/_base.html
index 114e1ec..066e76e 100644
--- a/themes/bootstrap/templates/_base.html
+++ b/themes/bootstrap/templates/_base.html
@@ -61,7 +61,9 @@
                        placeholder="mailbox"
                        class="form-control"
                        aria-describedby="at-inbucket-addon"/>
-                <span class="input-group-addon" id="at-inbucket-addon">@inbucket</span>
+                {{with .ctx.WebConfig.MailboxPrompt}}
+                <span class="input-group-addon" id="at-inbucket-addon">{{.}}</span>
+                {{end}}
               </div>
             </div>
             <button type="submit" class="btn btn-success">View</button>