In case you missed it, we recently wrote a piece covering 5 mobile widget best practices. As we mentioned, online non-mobile channels such as websites, emails and minisites play an invaluable role in building mobile subscriber lists. But what about those folks that don’t want to use a widget? How can companies integrate mobile-list building capabilities directly into their valuable online real estate?
The answer is simple: the Add Subscriber API. It’s extremely easy to use, boasting only four required parameters:
- Mobile number (you get this from subscribers who fill out your forms)
- Keyword ID (your API provider can give you this info)
- Short code (you own this)
- Authorization (used so that only you can access the API)
Plus, it offers three key benefits:
- Metadata may be associated with each mobile subscriber, i.e. you can define custom subscriber field(s) (e.g. zip, DOB) and use this information later for outbound mobile messaging & targeting.
- To ensure carrier compliance, the API triggers a real time opt-in confirmation upon sign up.
- The Add Subscriber API can be called in conjunction with other 3rd party APIs to create cross-channel consumer insights. By integrating your mobile consumer data with an email marketing database or other CRM system, you can engage consumers most effectively.
Email marketing sign-up forms are a perfect use case for the Add Subscriber API, as they are often a missed opportunity for brands that could be building both their email & mobile marketing databases. Take a look at this form from Sizzler:
Full disclosure: I’m a huge Sizzler fan. That said, I was disappointed to see that their email sign up form contains a field for phone number, but it is one of the only fields that is not required. A simple integration using the Add Subscriber API would allow consumers who were interested in receiving information via SMS to opt in via the existing web form. Furthermore, all of the data points (e.g. Favorite Location, Birthday) could be mapped to each subscriber so that Sizzler could send more relevant and targeted outbound messages going forward.
Contrast the Sizzler form with this one another member of the QSR vertical, Cravings to Go:
As you can see, this form gives consumers the option to choose which way they prefer to receive messaging. This is a great example of how a brand can use the Add Subscriber API to integrate mobile opt-ins into their online web forms.
For those interested in more information on the Add Subscriber API, I encourage you to have a look the full documentation on our Developer Site.










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