OptinMonster Documentation

Documentation, Reference Materials, and Tutorials for OptinMonster

Home

Docs

How to Connect OptinMonster with MailerLite

How to Connect OptinMonster with MailerLite

OptinMonster offers seamless integration with MailerLite email marketing service. Connecting OptinMonster to your MailerLite email list is very easy.

In this article, you’ll learn how to connect MailerLite with OptinMonster.

Guide for MailerLite and MailerLite Classic

MailerLite offers two versions of their platform, MailerLite and MailerLite Classic. You’ll need to connect to the specific version you are using or your leads will not be captured! We provide a walk-through for each version of MailerLite in this guide.

Connect MailerLite

When you create a campaign in OptinMonster that you intend to collect leads with you’ll want to integrate with one or more services to send those leads to.

To send leads to MailerLite, follow these steps:

  1. Before you start, you’ll need a MailerLite API Key. You can generate and copy an API Key from your MailerLite account following this guide.
  2. Navigate to the Integrations view in the campaign builder, search for and select MailerLite.
    Select MailerLite to integrate with OptinMonster.
  3. Enter a MailerLite Account Name (*internal use only) and your MailerLite API Key in the appropriate fields, then select the Connect to MailerLite button.
    Connect to MailerLite.
    *The MailerLite Account Name can be anything that helps you identify the specific integration within OptinMonster. It’s possible to add more than one MailerLite integration to your account and this is an easy way to differentiate between them when assigning integrations to individual campaigns.
  4. Required: Once the MailerLite integration has been connected select the MailerLite Group you wish to send leads to from the Provider Groups field.
    Select the MailerLite Group to add leads to.
  5. Optional: You can also enable the Resubscribe Lead? option.
    Resubscribe leads in MailerLite.
  6. When you’re finished, Save your campaign.

Connect MailerLite Classic

When you create a campaign in OptinMonster that you intend to collect leads with you’ll want to integrate with one or more services to send those leads to.

To send leads to MailerLite Classic, follow these steps:

  1. Before you start, you’ll need a MailerLite API Key. You can generate and copy an API Key from your MailerLite Classic account following this guide.
  2. Navigate to the Integrations view in the campaign builder, search for and select MailerLite Classic.
    Select MailerLite Classic to integrate with OptinMonster.
  3. Enter a MailerLite Classic Account Name (*internal use only) and your MailerLite Classic API Key in the appropriate fields, then select the Connect to MailerLite Classic button.
    Connect with MailerLite Classic.
    *The MailerLite Classic Account Name can be anything that helps you identify the specific integration within OptinMonster. It’s possible to add more than one MailerLite Classic integration to your account and this is an easy way to differentiate between them when assigning integrations to individual campaigns.
  4. Required: Once the MailerLite Classic integration has been connected select the MailerLite Classic Group you wish to send leads to from the Provider Groups field.
    Select the Group to add leads to in MailerLite.
  5. Optional: You can also enable the Resubscribe Lead? option.
    Resubscribe leads in MailerLite Classic.
  6. When you’re finished, Save your campaign.

Add Extra Fields

Field Mapping

This integration supports Field Mapping, so you can easily add radio buttons, phone fields, text areas, number fields, lists, and more!

Before you begin using Field Mapping with MailerLite, please consider the following:

  • Custom fields are referred to as Fields in your MailerLite account.
  • The following custom fields arereserved in MailerLite and cannot be mapped to:
  • Automatically created custom fields are added as text fields in MailerLite. This can be avoided by manually creating your custom fields in MailerLite before mapping to them in OptinMonster.
  • You can manage your custom fields in MailerLite following this guide.

Form Embed Block

Alternatively, you can add any MailerLite webform to your campaign using our Form Embed block.

Email Automations

To send emails automatically to new leads you’ll want to configure email automations within your MailerLite account.

The following guides from MailerLite may be helpful to get started:

Testing

We strongly recommend you test the optin form before publishing your campaign to ensure it is working as you expect.

Before you begin, please be aware of the following details when testing MailerLite integrations:

  • Previously submitted or already subscribed leads may be treated differently by MailerLite than new leads. For this reason, we recommend using a completely unique email address each time you test submit your campaign’s form. You can use a free tool like TempMail.io or learn how to create unlimited unique email addresses from a single Gmail account.
  • If the lead is captured in MailerLite but you do not receive any automated emails it indicates the integration from OptinMonster to MailerLite is correct, and the issue is with the automated email configuration. MailerLite controls email automation exclusively. If you require assistance in troubleshooting email automations we recommend reaching out to MailerLite support directly.

Get started testing with the Live Site Inspector tool explained in our guide on how to test an OptinMonster campaign.

Spin-a-Wheel Support

If you are configuring a Gamified spin-to-win campaign, spin-a-wheel support is not available at this time to send the coupon data to MailerLite.

FAQs

Can I send leads to more than one Group?

Yes! See our Lead Sharing guide to accomplish this.

How do I configure single or double opt-in?

See our guide on single vs. double opt-in.

Is it possible for me to add a phone field to my campaign?

Yes! You can add a phone field. Learn how to capture phone numbers with OptinMonster.


If you’re serious about jumpstarting your website business growth, then get started with OptinMonster today!

Get Started With OptinMonster Today!

BONUS: Done-For-You Campaign Setup ($297 value)

Our conversion experts will design 1 free campaign for you to get maximum results – absolutely FREE!

Click here to get started →

Troubleshooting

The campaign is capturing leads but shows 0 conversions in analytics.

Confirm that conversion tracking is turned on for the submit button in your campaign. See our guide on How to Enable Conversion Tracking.

I’ve integrated my campaign but leads are not being added to my MailerLite account.

Be sure you’ve integrated with the correct MailerLite platform in OptinMonster. We provide distinct integrations depending on whether you are using the MailerLite OR MailerLite Classic platform.

We provide a walk-through for each platform in the sections above.

MailerLite rolled out a new version of their platform in March 2022, learn more about it here.


Still stuck?

How can we help?

Last updated on


Start Getting More
Leads & Sales Today
with OptinMonster!

Create and launch smart capture forms today in minutes. What are you waiting for?

Create and launch smart capture forms
today in minutes. What are you waiting for?

OptinMonster has transformed our business. Before integrating their optins, our clients saw a 2% conversion rate from web traffic, which is slightly above the standard for their industry. With the integration of OptinMonster’s lightbox popup, exit-intent technology, split testing, and other tools, our client’s conversion rates soared by an unprecedented 500%. They attracted substantially more customers while spending less on digital advertising. Their success propelled them to the top of their markets, outperforming national chains and other medical spas with much bigger marketing budgets. Our client’s success in their market has distinguished us in our own. We are now one of the most sought-after marketing firms in the industry of aesthetic medicine. We know that the integration of OptinMonster, more than any other tool or marketing strategy, has supported this growth and achievement.

chris zelig medstar media

Chris Zelig

Partner, Medstar Media

OptinMonster has been a game-changer for us. From driving donations to collecting new leads, there is nothing that this simple tool has failed to accomplish. Our lead collection rate has jumped by over 1,000%.

joe lowe american bird conservancy

Joe Lowe

Director of Digital Communications, American Bird Conservancy

Through OptinMonster’s exit-intent popups, we have more than doubled our sales conversion rate. Best of all is the compound effect of using OptinMonster over a long period of time—more conversions mean more customers, which means more word of mouth.

mitch smith, managing director, shockbyte

Mitch Smith

Managing Director, Shockbyte.com