Interact with third-party iOS mail clients, using custom URL schemes.

What's New

ThirdPartyMailer 2.1.0

  • Add ProtonMail support


Interact with third-party iOS mail clients, using custom URL schemes.

Platform iOS Swift 5 Build Status Swift Package Manager CocoaPods compatible Carthage Compatible MIT license

Supported mail clients

Client URL Scheme App Store
Sparrow sparrow discontinued
Gmail googlegmail link
Dispatch x-dispatch link
Spark readdle-spark link
Airmail airmail link
Microsoft Outlook ms-outlook link
Yahoo Mail ymail link
Fastmail fastmail link
ProtonMail protonmail link

Unfortunately, not all mail clients offer URL schemes to be supported by ThirdPartyMailer. If you’re aware of another candidate, please let us know.

How to install

Swift Package Manager

In Xcode, click on the “File” menu, “Swift Packages”, “Add Package Dependency…”, then enter the URL for this repo:


With CocoaPods, simply add ThirdPartyMailer to your Podfile:

pod 'ThirdPartyMailer'

Or, you can manually import the files from the Sources folder.

How to use

Getting the list of supported clients

let clients = ThirdPartyMailClient.clients

Testing the client availability (i.e. if the app is installed)

⚠️ In order to test the client availability, your app needs to declare the relevant URL scheme in its Info.plist file, by adding a LSApplicationQueriesSchemes array. You can find an example here, or check out the documentation.

if ThirdPartyMailer.isMailClientAvailable(client) {
    // ...

Opening the client (with optional message recipient, subject, body, cc, and bcc)

ThirdPartyMailer.openCompose(client, recipient: "")

ThirdPartyMailer.openCompose(client, recipient: "", subject: "Hello", body: "Good morning…", cc: "", bcc: "")

🆕 Using the system default mail client

If you don’t specify a client, the openCompose(…) function will use .systemDefault, a client defined for the standard mailto: scheme. By default, it will open Apple Mail, but if the user has selected a custom mail client (iOS 14), it will automatically open it instead.

ThirdPartyMailer.openCompose(recipient: "")


ThirdPartyMailer is written in Swift 5.0, requires iOS 10.0 and above, Xcode 10.2 and above.


ThirdPartyMailer was created by Vincent Tourraine.


ThirdPartyMailer is available under the MIT license. See the LICENSE.txt file for more info.


  • Swift Tools 5.0.0
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Last updated: Fri Mar 17 2023 23:17:38 GMT-0500 (GMT-05:00)