First, you collect the opt-in, which 9 times out of 10 will be a 'cold lead', ie., someone (NOT) familiar with you or what you represent. So instead of immediately going into full-on presentation mode, which isn't good for you or your prospect, you create a buffer where the prospect can learn more about YOU in a safe space. The reason this is important nowadays is because your prospect is more interested in you, your story and why you choose to align with your primary program, even more so than his or hers interest in the biz opp itself.
When you purchase a list of numbers, you are really going after the attached consumer data. You cannot use the actual numbers to grow your list, but when an owner of a purchased number does opt-in to your SMS campaign, you can connect the data to the subscriber. This will allow you to target messages with content that will result in a higher success rate.
Concatenated messages can only fit 153 characters instead of 160. For example, a 177 character message is sent as 2 messages. The first is sent with 153 characters and the second with 24 characters. The process of SMS concatenation can happen up to 4 times for most bulk SMS providers, which allows senders a maximum 612 character message per campaign.
The privacy issue became even more salient as it was before with the arrival of mobile data networks. A number of important new concerns emerged mainly stemming from the fact that mobile devices are intimately personal and are always with the user, and four major concerns can be identified: mobile spam, personal identification, location information and wireless security. Aggregate presence of mobile phone users could be tracked in a privacy-preserving fashion.
Once you've collected your mobile numbers, verified that you have followed all of your legal responsibilities you can start your SMS marketing campaign. I'd suggest using a 3rd party service provider to ensure that you are able to track the return on investment for your campaign, embed an unsubscribe message, and easily manage your SMS marketing database including unsubscribes.