Workflow · Clean · Opening soon

Validate email addresses in a list

Clean your email list from a Mailchimp audience export. See which contacts are valid, duplicate, invalid, or role-based.

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Someone typed

“check our mailchimp audience export and show every contact, status Agrees if the email is valid and unique, Duplicate email if it repeats, Invalid email if it lacks a valid tld, Role-based if it’s support or billing”

The agent read it as

Check our Mailchimp audience export and show every contact, status Agrees if the email is valid and unique, Duplicate email if it repeats, Invalid email if it lacks a valid tld, Role-based if it’s support or billing, with precedence in this order: Role-based, invalid, duplicate, agrees.

What the agent built

1 step, each one an ordinary Mammoth step you can open and change.

File

Mailchimp audience export

CSV export · 14 rows

Step

Set contact email status

Step 1

Result

Email Status Check

14 rows

Schedule

Runs when you say

Proposed

File
Mailchimp audience export
CSV export · 14 rows
Step
Set contact email status
Step 1
Result
Email Status Check
14 rows
Schedule
Runs when you say
Proposed

Checked on the sample files: every step ran, 14 rows came out.

Download Mailchimp audience export sample (14 rows)Mailchimp: Audience > All contacts > Export audience

What you get back

The result of that run, the rows to look at first.

Email Status CheckSample data14 rows

Email Address	Contact status	First Name	Last Name	Date Added
jules@northwind	Invalid email	Jules	Parker	2026-10-02
noah.khan@northwindco.com	Agrees	Noah	Khan	2026-10-09
leo.singh@brightforge.io	Agrees	Leo	Singh	2026-11-04
maya.chen@lumenberry.com	Duplicate email	Maya	Chen	2026-09-29
maya.chen@lumenberry.com	Duplicate email	Maya	Chen	2026-10-21
zoe.patel@brightforge.io	Agrees	Zoe	Patel	2026-11-01
omar.frost@harborlane.co	Agrees	Omar	Frost	2026-11-10
tessa.owens@lumenberry.com	Agrees	Tessa	Owens	2026-10-14
nina.park@harborlane.co	Agrees	Nina	Park	2026-11-07
ben.ito@northwindco.com	Agrees	Ben	Ito	2026-09-22
ava.morales@northwindco.com	Agrees	Ava	Morales	2026-09-18
billing@lumenberry.com	Role-based	Billing	Desk	2026-10-17

14 rows in the result · 12 shown, problems first. Sample data: illustrative figures, not business results.

How do you validate email addresses in a list?

Upload your Mailchimp audience export and run the email status step. It checks each contact email and marks it as Agrees, Duplicate email, Invalid email, or Role-based. You can then remove the contacts that are not valid for your list.

How it works

How to use the Email Status Check workflow

1Get early accessWe invite people in small batches, job by job. You'll land on this workflow, already built and checked on the sample files.
2Swap in your exportsUpload your own files as they come out of your tools. The agent checks the workflow on your rows.
3Change it in words, then turn it onSay what to change and see the new result before anything saves. Then choose when it runs.

Email Status Check: questions

What file should I export from Mailchimp?

Export your audience or contacts as a spreadsheet file from Mailchimp, then upload that file here. The workflow reads the rows in that export and checks the email column.

What happens to rows that do not match the rules?

They still appear in the result. Each row gets the status that matches it best, based on the rule order, so you can review or remove the rows you do not want.

How do I change the rules?

Edit the rules in the step settings using plain words. You can change what counts as valid, duplicate, or role-based, and you can change the order the rules are checked in.