MailerLite Account Approval and List Imports: Clean the List First

MailerLite reviews new accounts and can question imported lists, so the best way to get approved smoothly is to import only subscribers who opted in, be ready to explain where they came from, and verify and deduplicate the list before you upload it. A clean first import also means your first campaigns go out with a low bounce rate, which is what email platforms watch most closely on new accounts.

Why MailerLite reviews accounts

MailerLite sends mail for many customers through shared infrastructure. If one account imports a scraped list and blasts it, the bounces and spam complaints damage delivery for everyone. So, like most email platforms, it checks new accounts before they can send freely. Approval usually looks at:

• Your website and what you do.
• How you collect subscribers (signup forms, checkout, events).
• What you plan to send.
• The list you are importing, if any.

Exact steps change over time, so check MailerLite's current help pages for the process and its acceptable use policy.

What lists are acceptable

Source	Acceptable to import?
Website signup form	Yes
Customers who opted in to marketing at checkout	Yes
Event or webinar attendees who agreed to updates	Generally yes
Old list from another email platform with opt-in records	Yes, clean it first
Purchased or rented list	No
Scraped or harvested addresses	No
Business cards or contacts who never agreed to marketing	No

If your list includes people who never opted in, remove them before import. Cleaning a list does not make it permission-based; it only removes addresses that would bounce.

Step 1: Gather proof of how people signed up

Before you start, write down:

• Where signups came from (form URL, checkout opt-in, event).
• Roughly when they joined.
• What they were promised (weekly newsletter, product updates).

If MailerLite asks, a short clear answer helps. Keeping a signup date and source column in the import file is good practice anyway.

Step 2: Remove duplicates and junk

Lists exported from another tool often contain duplicates, test addresses and obvious junk such as "test@test.com". Remove:

• Duplicates, using the duplicate email remover.
• Addresses with obvious typos; the email typo corrector fixes clear domain mistakes like "gmial.com".
• Role addresses that were never real subscribers, if your list has them; the role-based email filter finds them.

Step 3: Verify every address

Upload the file to the verify page and split results:

Result	Import?
Valid	Yes
Catch-all	Yes, but send to them after valid subscribers
Disposable	Usually no; they rarely engage
Risky or unknown	Hold; re-check later
Invalid	No

If you are moving from another platform, also exclude anyone who unsubscribed or was marked bounced there. The MailerLite export guide shows how to pull a list out again later for re-verification.

Step 4: Import with segments

When you import, use groups or fields so you can send in waves:

• Group A: subscribers who opened or clicked in the last 90 days, if you have that data.
• Group B: other valid subscribers.
• Group C: catch-all addresses.

This gives you control over the first sends after approval.

Step 5: Send carefully at first

New accounts have no sending history with MailerLite, and your domain may have none either.

1. Authenticate your domain in MailerLite (SPF and DKIM records), and add a DMARC record if you do not have one. Check with the bulk email authentication checker.
2. Send the first campaign to Group A only.
3. Check bounces and complaints.
4. Send to Group B, then Group C, if the numbers look healthy.

If the list is old

A list that has not been mailed in over a year needs extra care, even after verification. People forget they signed up, and forgetting leads to spam complaints. Consider a short re-permission email to old subscribers asking if they still want to hear from you. Mailing an old email list explains how to approach it.

Common reasons imports get questioned

Issue	Fix before importing
No clear signup source	Document where subscribers came from
High share of invalid addresses	Verify and remove them
Many role or generic addresses	Filter them out unless they truly subscribed
List much larger than your website traffic suggests	Explain the source, or remove contacts without permission
Recently purchased contacts mixed in	Remove them

Worked example (illustrative)

A bakery with an online shop moves 2,800 contacts from another platform to MailerLite.

• It exports active subscribers only, plus separate files of unsubscribes and bounces to exclude.
• Deduplication removes about 100 rows where customers signed up twice, once at checkout and once through a popup.
• Verification flags roughly 200 addresses as invalid and a few dozen as disposable, most from an old giveaway. Those are left out.
• The remaining contacts are imported into two groups: customers who opened in the last 90 days, and everyone else.
• When MailerLite's review asks where contacts came from, the bakery explains: website signup form and checkout opt-in, with the giveaway entrants removed.

The first campaign goes to the engaged group only. Bounces stay low, and the second group follows a week later.

Quick answers

• Can I import contacts from an event I sponsored? Only those who agreed to hear from you.
• Do I need double opt-in? It is optional for many senders but helps prove consent.

Verify before you import

A clean list makes approval smoother and protects your first campaigns. Upload your export on the verify page; you get 100 free email checks when you sign in with Google, no card. Bigger lists are covered by monthly plans on the pricing page.