You can enable your Messagebox account to pull mobile number data from your Mailchimp account and also allow people to join your MailChimp lists by text message, automatically - and for free!
Advanced users with programming knowledge can also use the keyword on their account to request additional information by text message, such as email address and name, and using our Incoming SMS API can write that information straight into any Mailchimp list. E.g. "Text [yourKeyword] followed by a space and your email address to 88802".
This provides you with 2 main advantages;
1. Use the power of short code marketing to allow people to join your MailChimp lists! You get a free keyword on our 88802 short code which allows people to text in and join your email list.
2. You can instantly send an SMS, via Text Marketer, to any lists in your MailChimp account.
To read more and get the documentation please see;