CosmoSia

Recommended for those who are considering moving away from carrier email.
You can create "XX@cosmosia.email" which is as easy to use as your carrier email!
Made in Japan, so you can be sure of your privacy.

Make your email more fun! The long-awaited iOS version of the free email app with over 1 million users is now available!


- Just tap! The all-new "Reactions" feature
Get your feelings across without words: Just like in a chat, react to emails with emoji.

Reaches the other person even without the app: When you add a reaction, the recipient automatically receives a clear notification email. No matter which email service they use — Gmail, docomo mail, Yahoo! Mail, and more — your "I saw it" comes through loud and clear.

Stay connected like a conversation: Even in group exchanges, you can see at a glance who reacted and how, so conversations keep flowing and stay fun.


- You can create your own email address!
You can create your own e-mail address such as XX@cosmosia.email.
You can use email addresses such as XX@cosmosia.email. The email address will be linked to your phone number like a carrier email address, so please consider this when you are thinking of moving from a carrier email address!
Email address is available only when you purchase the subscription "CosmoSia Email Plan (Monthly)".
We also recommend this service when you move to ahamo, povo, LINEMO, or other plans that do not include carrier email!
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- You can manage multiple email services at once.
IMAP4 (Gmail, docomo mail, etc.) is supported.
　
- It is a standard email application for low-cost smartphones and MVNOs.
It's easy to use, just like a carrier email, and it's popular among low-cost smartphone users!

- Easy to set up
Just set your email address and password and you're ready to go. Organize your mailbox now.

- No more unwanted e-mails!
We support a "reject list" function that allows you to prevent unwanted e-mails from entering your inbox.

- Basic functions are free!
The installation is free and the basic functions are free no matter how many times you use them.
A predetermined usage fee is required to use CosmoSia Mail.
You will have to pay for the communication charges incurred when sending and receiving emails.

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The following email services can be used
docomo mail
au-mail
R mail
Y! mobile mail
Yahoo! JAPAN mail
iCloud mail
Gmail
Outlook/Hotmail
mineo mail
so-net mail
BIGLOBE mail
We support the setup of many other email services.

* You cannot use your UQ mobile email address (XX@uqmobile.jp).
Please look forward to future updates for support of other mail services!
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About the trademark
docomo mail is a trademark of NTT DOCOMO, INC. in Japan.