"Mailchimp" type programme required

General information for the website: as described Description of requirements/features: I want of a very basic “Mailchimp” type programme/app!!!!! I will have a contact list of perhaps 200 mobile No´s or email addresses, all of real estate agents. I need a programme/app that will offer 2 or 3 stock templates, allowing a real estate agent within the group to upload images and content of a property he/she has available for sale/rent. Each template will be different, offering a different layout, different No of photos etc etc. The user uploads the content, and the programme then sends the content to all 200 agents within the contact list. This will be a free service that I plan offer to my colleagues within the local real estate sector, so I’m not looking to spend big on this. Is there any theme out there that does anything like this? Pleases advise. Extra notes: