A simple vtiger module for integrating vtiger and Lianamailer newsletters and email marketing service

The basic idea is to create a vtiger module for updating addresses and contacts between vTiger and Lianamailer ([login to view URL]). 1. vTiger -> Liana mailer: - Updating mailing list members at Linamailer from vTiger contacts 2. Lianamailer-> vTiger: - Updating Email Opt Out, - New members/contacts and - Non working email addresses from Lianamailer to vTiger contacts (Only these functions at this phase. The module may be extended to include more functionality later.) See Rest API here: [login to view URL] Module UI: - User selects manually wanted/matching vTiger Campaign’s list and an existing Lianamailer list (e.g. dropdown field from both lists). - Last update day/time could be shown. - User updates and adds members to the matching list by pressing "Update"-button when needed. The user should be warned "Are you sure to update list by name "zxvn...". Email-address and basic field data, e.g. First Name, Last Name, Organization will be updated or added. When needed, the user repeats the updates for additional lists separately. No multi-selection is needed. Automatic tasks: - Updating matching members of Lianamailer lists identified by contact's email-address. All matching Lianamailer lists will be updated. - Adding new members to the lists of Lianamailer mailing lists if email-address is not existing. If no matching list name is found the member is not added. (All list-names must have been added manually beforehand to Lianamailer by the user.) - Updating Email Opt Out, new members/contacts and non working email addresses (custom field, e.g. checkbox) from Lianamailer to vTiger. - Automatic running of tasks, e.g. every 24 hours. Notes: -No sending to list members is started from vTiger. -vTiger version now is 6.4. If possible vTiger 7 version functionality should be included. -The integration should be made as a standard vTiger module including language file (en-us) other transaction will be made by ourselves. -Later an integration of vTiger and e-invoice / electronic billing system will be needed as a separate module. Preference will be given to freelancers with experience in e-invoice integrations.