# The First 90 Days: You Retention Roadmap with Alex Fearon

> Hi, I'm Alex. Thanks so much for booking The First 90 Days. This call is your 45-minute kickoff. We'll talk about your team, your winter appeal and which emails you'd like as part of the audit What you're paying today A 50% deposit of £1,500 which includes secures one of three places. I'll invoice the balance of £1,250 + VAT when your report is delivered. Need an invoice instead? Lots of charities do. Email me at alex@maybelater.uk and I'll send a deposit invoice. Places are confirmed in the order deposits are paid.

- Host: Alex Fearon
- Duration: 30 min
- Location: Google Meet
- Host time zone: Europe/London
- Confirmation: Bookings are confirmed instantly.
- Payment: required, and collected on the booking page.
- Booking page: https://cal.com/maybelater/the-first-90-days-you-retention-roadmap
- Event type id: 7285452

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7285452&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone=<IANA time zone>
cal-api-version: 2024-09-04
```

The response is `{"data":{"YYYY-MM-DD":[{"start":"<ISO 8601 with offset>"}]}}`; no API key is needed.

## Book

```http
POST https://api.cal.com/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 7285452,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Job-title": "…",
    "title": "…",
    "Which-email-platform-do-you-use": "…",
    "Which-emails-can-you-send-me": "…",
    "aiAgentCallPhoneNumber": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Job-title` (Job title), `title` (How many people work on email, and roughly how many hours a week between you?), `Which-email-platform-do-you-use` (Which email platform do you use?), `Which-emails-can-you-send-me` (Which emails can you send me?)
- Optional fields: `aiAgentCallPhoneNumber` (Phone number (for our agent to call)), `guests` (Add guests), `notes` (Anything I should know before we speak?)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.