- Manage multiple IMAP accounts
- Group emails into one inbox
- Tag-colored accounts
- Group emails by date
- Dark mode
- Optimized synchronization time
- Switch between accounts and unified inbox
- Send emails with HTML formatted signatures
- Open and send email attachments
- Open and browse compressed files and send uncompressed files individually
- Unsubscribe with a tap
- Manage inbox by creating, renaming, and removing folders
- Filter inbox by categories (Unread, Newsletters, emails with attachments...)
- Search and select contacts from phone contacts
- Customize swipe actions
- Undo actions (send, delete, archive...)
- Snooze emails
- Make OneMail your default email app
- OneMail Plus! offers additional features such as adding unlimited mail accounts and receiving push notifications from all IMAP providers
- Respects user privacy and does not store any information from emails
- All email data and headers are stored locally on the device.