Elaborate on "good money".
klinker41's library looks pretty good for sending and receiving MMS messages. Note that B4A already has reliable sending and receiving of SMS messages. Do you want those capabilities duplicated in your library?
Hi
@Roycefer. Thanks for your reply. Yes, you're right about SMS messages. The B4A libraries should be fine. The new library would be needed for sending MMS messages and filtering out received MMS messages (that I guess the B4A libraries wouldn't show). The received SMS and MMS messages lists could then be combined into one list for displaying to the user. (However, if it's easier to have all SMS and MMS features in one library - I'm happy for that as well).
I run a company that employs several full time developers, sales staff, etc. I live in the real world. If you send me a proposal detailing timescales and costs, I'll give it serious consideration. (I've employed the services of other well known B4A community members recently. They can justify for me if that helps).