Outlook / Hotmail Username Availability — Bulk Email Checker

What does Outlook Username Checker do?

Outlook Username Checker tells you instantly whether an Outlook or Hotmail email address is available or already taken. Give it a list of usernames, and it returns availability status plus Microsoft's own alternative suggestions for taken names — all via the Apify platform with scheduling, API access, and monitoring built in.

Why use Outlook Username Checker?

• Check dozens of usernames in a single run instead of one by one in a browser
• Get Microsoft's suggested alternatives automatically when a name is taken
• Integrate results into your workflow via the Apify API or webhooks
• Schedule regular checks to catch when a username becomes available

How to use Outlook Username Checker

1. Open the Input tab in Apify Console.
2. Add the usernames you want to check — you can enter just the username (e.g. john.doe) or the full address (e.g. john.doe@outlook.com).
3. Optionally adjust Delay Between Requests if you're checking many names.
4. Click Start and wait for the run to finish.
5. Open the Output tab to see results, or download them as JSON, CSV, or Excel.

Input

Field	Type	Description	Default
usernames	string list	Usernames or full addresses to check	—
delayMs	integer	Milliseconds between requests (500–10000)	1500

Example input:

{
  "usernames": ["john.doe", "jane.smith", "coolname99@outlook.com"],
  "delayMs": 1500
}

Output

One record per username is pushed to the dataset.

[
  {
    "username": "john.doe",
    "signInName": "john.doe@outlook.com",
    "isAvailable": false,
    "suggestions": ["john.doe1@outlook.com", "john.doe2026@outlook.com"],
    "quota": "Unlimited."
  },
  {
    "username": "xk9r2qvw",
    "signInName": "xk9r2qvw@outlook.com",
    "isAvailable": true,
    "suggestions": [],
    "quota": "Unlimited."
  }
]

You can download the dataset in various formats such as JSON, HTML, CSV, or Excel.

Data table

Field	Format	Description
signInName	text	Full email address checked
isAvailable	boolean	true if the username is free
suggestions	array	Microsoft's alternatives (only when taken)
username	text	Original input value
quota	text	Always "Unlimited." — this Actor has no usage cap

Usage limits

There is no usage limit on this Actor — every account, free or paid, can run it without a monthly cap or result limit. The quota field on each result simply reads Unlimited.. You only pay for what you run (see pricing below).

Tips

• Keep delayMs at 1500 ms or above when checking more than 20 usernames.
• You don't need to add @outlook.com — the Actor handles it automatically.
• If isAvailable is null in the output, that request encountered an error; retry or increase the delay.

FAQ and support

For bugs or feature requests, use the Issues tab on this Actor's page. Custom solutions and integrations are available on request.