Sendios integration with AppsFlyer

At a glance: Sendios, an email delivery and analytics platform, embeds AppsFlyer OneLink branded links within emails. Email recipients clicking on the link are deep-linked into an app. 


Email service providers (ESPs) are excellent sources of segmented user traffic. They wrap deep linking URLs with their own click recording domain. In some cases doing so breaks iOS Universal Links. To overcome this, Sendios uses Universal Links on top of their click recording domain. They integrate with AppsFlyer and by using OneLink branded link capabilities enable deep linking and click recording.

Set up Sendios

Configure Sendios and the AppsFlyer SDK, to send emails containing OneLink branded links. 


Mobile SDK versions:

  • iOS: V4.9.0 or later 
  • Android  V4.9.0 or later 

Step 1: Set up a Sendios account

To set up your account at Sendios:

  1. Create a new Sendios account by contacting Sendios at
  2. In Sendios, create a new project and enter a valid DNS record for the email sending domain.


Set up AppsFlyer

Step 2: Configure links for your email campaigns

  1. Create a OneLink template for your email campaigns.
  2. Create a Branded Domain.
    Note: In step 3, Set a CNAME record, before copying the CNAME destination, make sure to select
    Use the branded domain for an ESP configuration.

    new branded domain.png

Create emails and testing links

Step 3: Send emails

  1. Create a OneLink URL in the Link Management page (or manually). You must URL-encode parameter values.
  2. [Best practice] Use the following parameters:
    • pid (media source): Use a media source that signifies this usage such as Email.
    • c (campaign): Campaign name
    • af_dp : The deep link URI scheme you want to deep-link your users into.
    • af_web_dp: Where to redirect users clicking the link on desktop.
    • af_ios_url : Where to redirect users that don’t have the app clicking the link in an iOS device.
    • af_android_url: Where to redirect users that don’t have the app click the link in an Android device.
  3. In Sendios, create an email template and insert the OneLink in the template.
  4. Go to Account > Customize and mark AppsFlyer links domain.



For the sake of readability, URL parameters are not URL-encoded in this example.

Test your links

To test the integration:

  1. Set-up Sendios.
  2. Create a OneLink URL.
  3. Insert the URL in an email.
  4. Send a test email to yourself. 

Expected result:

  • If you have the app installed, it should launch and you will be deep-linked into the defined app page.
  • A click reflects in:
    • The AppsFlyer dashboard, attributed to the media source and campaign.
    • Sendios data.