Why Email?

Getting a user to install your freemium app is only the first step. The key to convincing them to becoming a subscriber is being able to engage with the user over the next days and weeks.

Push notifications and in-app messaging are good channels but the best channel remains email - the user naturally consumes email when they have time to properly consider each message and that's your opportunity to communicate the value of your app.

Simple Email Registration

InApp Mailing Lists acts as a bridge between your mobile app, and your mailing list platform. It provides a simple API which you can use to easily subscribe and unsubscribe email addresses. It then automatically mirrors those changes into the mailing list platform you're using. Importantly, all this is done without needing to embed any API credentials from your mailing list platform into your app.

Additionally, you can change your mailing list platform at any time without needing to update your app. If you haven't yet selected a mailing list platform, you can consigure InApp Mailing Lists to simply maintain a stored list of emails, so that you can later submit them to a new mailing list platform.

Simple API. Use either a REST-style network API, or a native Swift API that easiliy support both UIKit and SwiftUI apps.
Secure by Design. The mobile API only has the ability to register an email address, and later unregister that email address. Any email addresses registered by other devices cannot be queried.
Native UI. No webviews are needed to complete the integration. Use the same UI elements and styling as the rest of your app.

Email registration is not just for mailing lists. You can also use it for marketing automation (sending a series of timed emails over the days and weeks after the initial install) and transactional emails (such as letting a user know if their renewal fails).

Supported Platforms

We're adding new platforms as people request them, so if this list is missing your current mailing list or marketing automation platform, please let us know and we'll prioritize adding it!

* In progress

Request New Platform

Mailchimp Sendy Intercom* Convertkit*

Pricing plans for teams of all sizes

No credit card needed until you're ready to launch.

Single App

Start here if you have a single mailing list.

$99 /year

1 mailing list
Unlimited subscribers
Usage analytics

Get Started

Multiple Apps

Supports businesses with multiple apps or mailing lists.

$249 /year

Unlimited mailing lists
Unlimited subscribers
Usage analytics

Get Started

Frequently asked questions

Have a different question and can’t find the answer you’re looking for? Reach out to our support team by sending us an email and we’ll get back to you as soon as we can.

My Mailing List platform has an API. Can't I use that?: Most mailing list platform APIs are designed for web servers to use. One side effect of this is that they're too powerful. In particular, they provide the ability to download all registered email addresses. This makes it very dangerous to distribute the API keys in a mobile app.
I don’t see my mailing list platform in your list. Can you add it?: Absolutely! The list of supported platforms is growing all the time, and nothing moves a new platform up the list faster than a potential customer.
I don’t currently have a mailing list. Can I start capturing email addresses?: Yes. Even without a connected mailing list platform you can download the email addresses of people who sign up. Additionally, if you add a mailing list in the future, you can automatically register email addresses that have been already captured.
Can I customise the UI?: Yes. The UI is essentially an example of how to use the API. You can use it as is, modify it as you wish, or replace it entirely.
Can I change my Mailing List platform in the future?: Yes you can. What’s more, all captured email addresses can be uploaded to the new mailing list platform.
What about push notifications and in-app messaging?: Push notifications only work if the user enables them, and users are very intolerant of marketing messages. In-app messages are also possible but suffer from the problem of being only visible to users when they open the app.