// get /v1/email-format
Email Format API
Detect the email format patterns used by any company domain. Returns all detected patterns with their percentage distribution so you can predict employee addresses.
// api console
- [0].format
- {first}
- [0].percentage
- 66
// 01 · request
Email Format is one HTTPS request
Send the parameters with your key and secret. Every SDK, the CLI and the MCP server make this same call.
/email-formatdomainrequired- Company domain
curl -G https://api.tomba.io/v1/email-format \
--data-urlencode "domain=piedpiper.com" \
-H "X-Tomba-Key: $TOMBA_API_KEY" \
-H "X-Tomba-Secret: $TOMBA_SECRET_KEY"const params = new URLSearchParams({
domain: "piedpiper.com"
});
const res = await fetch(`https://api.tomba.io/v1/email-format?${params}`, {
headers: {
"X-Tomba-Key": process.env.TOMBA_API_KEY,
"X-Tomba-Secret": process.env.TOMBA_SECRET_KEY
}
});
const { data } = await res.json();import os, requests
res = requests.get(
"https://api.tomba.io/v1/email-format",
params={
"domain": "piedpiper.com",
},
headers={
"X-Tomba-Key": os.environ["TOMBA_API_KEY"],
"X-Tomba-Secret": os.environ["TOMBA_SECRET_KEY"],
},
)
data = res.json()["data"]// 02 · response
What comes back
JSON, the same in every language. Fields Tomba doesn't know are null, never guessed.
/email-formatdata[].formatstring- Pattern such as {first}.{last}
data[].percentageinteger- Share of the company's addresses
{
"data": [
{
"format": "{first}",
"percentage": 66
},
{
"format": "{first}.{last}",
"percentage": 34
}
]
}// 03 · cost and limits
What a call costs
A call is charged only under the condition below. Rate limits depend on your plan.
// cost
1email count credit
Charged when: Every successful call, including an empty result.
Errors, 429 and 451 responses, and the same request again within your usage window cost nothing.
How credits work// rate limits
Requests per second / minute / day| Free | Basic | Growth | Pro | |
|---|---|---|---|---|
| Search, finder, similar, technology | 1 / 2 / 5 | 3 / 50 / 500 | 5 / 80 / 1,000 | 8 / 150 / 4,000 |
| Email verifier | 1 / 2 / 10 | 2 / 40 / 500 | 3 / 60 / 1,000 | 5 / 100 / 4,000 |
Scroll sideways for every column
Pro Plus, Scale and credit packs of 50,000 or more: no limit on these endpoints. Enterprise: no per-second or per-minute limit, 100,000 requests a day. Daily limits reset at 00:00 UTC. Rate limits