A turning-65 list is only as good as the calendar discipline behind it. Every name on a T-65 list becomes eligible for Medicare on a different date, their Initial Enrollment Period opens three months before their 65th birthday month, and plan marketing cannot start before that window opens. Work the list too early and you have a compliance problem. Work it late and the enrollment went to whoever called in week one. The agents who make money on T-65 lists are the ones whose outreach starts the day each name's window opens, automatically, name by name.
Here is how the window works, why most T-65 lists underperform, and how to run one on Medicare's calendar instead of yours.
How the Initial Enrollment Period actually works
The Initial Enrollment Period is a seven-month window built around the 65th birthday: it opens three months before the birthday month, includes the birthday month, and runs three months after. Someone turning 65 in December can enroll starting September 1 and has until the end of March.
For an agent, the date that matters most is the open. The seniors on your list start getting mail, calls, and ads the moment they become fair game, and the agent who reaches them early in the window, before the fatigue sets in, gets the conversation while they are still curious instead of annoyed. By month two of their window, that same senior has a stack of mailers on the counter and has stopped answering unknown numbers.
Why T-65 lists underperform
Agents buy a T-65 list once and then work it like a static file. That fails in a predictable way: the list is really 12 small lists wearing one spreadsheet, because every month a different slice of names comes due. Worked manually, three things go wrong.
Names get called too early, before their window opens, which wastes the touch and risks a complaint. Names get called too late, after every competitor already has, because nobody was watching the calendar the week the agent got busy. And names quietly fall through entirely, since tracking hundreds of individual birthday-driven windows in a spreadsheet is exactly the kind of job humans are bad at and software is built for.
The list did not underperform. The timing did.
Working the list on Medicare's calendar
The fix is gating, not effort. Every name should sit in a hold state with its own window-open date, and outreach for each name should fire on that date without anyone having to remember it.
That is how Mach 5's Medicare system treats a T-65 upload. Load the list once, and every name waits until its enrollment window opens. Then Aria starts the outreach for that name, calls and texts, books the appointment on your calendar, and captures the Scope of Appointment on the same recorded call, verified and archived. Names already 65 and older skip the hold and go to work right away. You buy the list once, and the system works it month after month on the schedule Medicare sets, whether that name comes due next week or next June.
Speed inside the window matters as much as the window itself. Being the first call on day one of a senior's IEP is the same race we described in why the first call wins during AEP, just running year-round. And since the 48-hour SOA wait ends October 1, 2026, that first conversation can become a same-day appointment.
What to look for in a T-65 list
The system can only be as accurate as the data. Whatever vendor you buy from, make sure the list carries a usable date of birth or at least birth month and year, since the window math depends on it. Fresher lists beat bigger lists: a thousand names aging into eligibility over the next 12 months will outproduce five thousand names of unknown vintage. And confirm the contact data is scrubbed for consent and do-not-call status, because automated outreach still has to play by contact rules.
FAQ
When can an agent start marketing to someone turning 65?
Plan marketing can begin when the prospect's Initial Enrollment Period opens, three months before their 65th birthday month. Before that, the name waits. A system that gates each name by its own window-open date keeps the whole list compliant automatically.
What is the Initial Enrollment Period?
A seven-month window around the 65th birthday: the three months before the birthday month, the birthday month itself, and the three months after. Each person on a T-65 list has their own window based on their own birthday.
How does Mach 5 work a turning-65 list?
Upload the list once. Every name holds until its enrollment window opens, then outreach starts automatically: Aria calls, books the appointment, and captures the Scope of Appointment on the recorded call. Names already 65 or older go to work immediately.
Sitting on a T-65 list that is not producing? See how the Medicare system works it or book a call and we'll walk through it live.