＋メッセージ（プラスメッセージ）

＋メッセージ（プラスメッセージ）is a mobile messaging app that lets you connect instantly using just your phone number—no lengthy registration required. Whether you're sending rich media or staying in touch with business accounts, this service brings together SMS reliability with modern messaging features.

Get started instantly without membership. The moment you open the app, you can begin messaging anyone in your contacts who has the service. Messages from people not yet saved to your phone are clearly marked as "Not registered," giving you immediate visibility into who's reaching out. This transparency makes managing conversations safer and more intuitive, especially when dealing with incoming messages from unfamiliar numbers.

Share rich media seamlessly across individual and group chats. Exchange photos and videos up to 100MB in size, letting you stay connected with far more than text alone. The "read" feature shows you when recipients have opened your messages, removing the guesswork from whether someone has seen what you've sent. Express yourself creatively with stamps that add personality to every conversation—transforming routine exchanges into more engaging interactions.

Connect with verified business accounts directly within the app. Companies operating official accounts display a distinct "verified mark" confirming Docomo authentication, so you can engage with customer service, receive important notifications, and complete transactions with full confidence. This bridges the gap between personal messaging and customer communication, consolidating how you interact with both friends and organizations in one familiar interface.

When messaging someone without the service, messages automatically convert to standard SMS, ensuring your communication never breaks down. This fallback ensures you can reach anyone, regardless of their app adoption. Compatible with Docomo smartphones and tablets running Android OS 7.0 through 14.0, ＋メッセージ（プラスメッセージ）integrates seamlessly with your existing device ecosystem.

Note that this service requires an sp-mode contract, ahamo/irumo internet service, or MVNO contract with SMS capability. Overseas roaming requires enabling the dedicated setting, and packet charges apply—a flat-rate plan is recommended. Download ＋メッセージ（プラスメッセージ）today to experience fast, safe, and expressive mobile messaging.