Im no whizzo on an ipad or similar but to use Mailshot was simple. Your alternative is very time consuming and totally unnecessary.
the problem i have with Mailshot is the Outlook and Ipad no longer Sync groups or distribution lists. A HUGE step backwards when the OE versions (which were before the recent Outlook) would sync groups and using Mailshot was then a walk in the park and an excellent app.
i still have it on my ipad2 hoping one day ipad / Outlook will get their act together and allow syncing again with outlook