CosmoSia is the best simple client application for email, SMS, and MMS which can manage your mailbox easily.
CosmoSia is the best replacement for your email client app because it supports all major email services and any other IMAP4 or POP3.
- Gmail
- Hotmail
- Yahoo mail
- AOL
- iCloud
- Outlook
- GMX
- Exchange
- SMS
- MMS

Easy to start
We provide a set for easy setting especially for Gmail, Outlook, Hotmail and SMS. You can start using it immediately.

Easy to use
CosmoSia love simplicity and are committed to make your email easy to read.
We do not provide the complicated functions that other mailers do.

Simple Client
CosmoSia is a simple mail client application that does not use an intermediate server.
We declare that it is structurally impossible for us to see any user's ID, account info, password or email body.
You can use CosmoSia app without concern that your information is being seen in the mailer service.

Animation Emoji
With CosmoSia, you can insert Emoji icons in emails.
Decorate your email and enjoy it!


We LOVE hearing your feedback and are so thankful for everyone supporting CosmoSia.
If you need any help, please contact us from [email protected] anytime.