This is documentation for the next SDK version. For up-to-date documentation, see the latest version (SDK 51).
Expo MailComposer
A library that provides functionality to compose and send emails with the system's specific UI.
expo-mail-composer allows you to compose and send emails quickly and easily using the OS UI. This module can't be used on iOS Simulators since you can't sign into a mail account on them.
Installation
- npx expo install expo-mail-composerIf you are installing this in an existing React Native app (bare workflow), start by installing expo in your project. Then, follow the additional instructions as mentioned by library's README under "Installation in bare React Native projects" section.
API
import * as MailComposer from 'expo-mail-composer';
Methods
MailComposer.composeAsync(options)
| Name | Type |
|---|---|
| options | MailComposerOptions |
Opens a mail modal for iOS and a mail app intent for Android and fills the fields with provided data. On iOS you will need to be signed into the Mail app.
A promise fulfilled with an object containing a status field that specifies whether an
email was sent, saved, or cancelled. Android does not provide this info, so the status is always
set as if the email were sent.
MailComposer.isAvailableAsync()
Determine if the MailComposer API can be used in this app.
Promise<boolean>
A promise resolves to true if the API can be used, and false otherwise.
- Returns
trueon iOS when the device has a default email setup for sending mail. - Can return
falseon iOS if an MDM profile is setup to block outgoing mail. If this is the case, you may want to use the Linking API instead. - Always returns
truein the browser and on Android.
Types
MailComposerOptions
A map defining the data to fill the mail.
| Name | Type | Description |
|---|---|---|
| attachments (optional) | string[] | An array of app's internal file URIs to attach. |
| bccRecipients (optional) | string[] | An array of e-mail addresses of the BCC recipients. |
| body (optional) | string | Body of the e-mail. |
| ccRecipients (optional) | string[] | An array of e-mail addresses of the CC recipients. |
| isHtml (optional) | boolean | Whether the body contains HTML tags so it could be formatted properly. Not working perfectly on Android. |
| recipients (optional) | string[] | An array of e-mail addresses of the recipients. |
| subject (optional) | string | Subject of the e-mail. |
Enums
CANCELLED
MailComposerStatus.CANCELLED ＝ "cancelled"SAVED
MailComposerStatus.SAVED ＝ "saved"SENT
MailComposerStatus.SENT ＝ "sent"UNDETERMINED
MailComposerStatus.UNDETERMINED ＝ "undetermined"