MailerLite
Add or update the subscriber in MailerLite for every lead, in the group you choose.
Add or update the subscriber in MailerLite for every lead, in the group you choose.
What you need
- A MailerLite account.
- A MailerLite API token, and the ID of a group if you want one.
- In Tafsee Popup: a role that can manage integrations.
1. In MailerLite
- In MailerLite, open Integrations > API and click Generate new token. Copy it.
- For a group: open Subscribers > Groups and open the group. The number in the address is its ID.
2. In Tafsee Popup
- Open Integrations and find MailerLite. Use the search box or the category tabs.
- Click Connect.
- Fill in the form:
- API token: the token you copied.
- Group ID: the number of the group. Leave it blank for no group.
- Account name: optional. A name to tell your accounts apart.
- Click Connect. What you enter is stored encrypted and is used only to deliver your leads.
- A window asks which campaigns send leads to MailerLite. Tick them and click Save campaigns.
New campaigns are not added by themselves. Come back here, or add this integration in the campaign's Publish step.
What is sent
- The e-mail address, and the fields name, last_name, phone and company when the lead has them.
- With a group set, the subscriber is put in it.
This tool takes a fixed set of details, so there is nothing to map. The list above is what it receives.
Test it
- Open a campaign that is connected to this tool, go to its Publish step and click Send test lead.
- The window shows each tool and whether it took the lead. A test lead is clearly marked, never counts in your numbers and is flagged in the leads list.
- Look in MailerLite for the test contact.
What you should see
The card shows Connected and the number of campaigns. New leads carry Delivered in the leads list, and appear in MailerLite.
If it does not work
- The tool did not let us in: the token is wrong or was deleted.
- The tool could not find the group: check the Group ID.
- MailerLite refused the lead: it does not accept the address, for example one that unsubscribed or bounced before.
- No campaign sends leads here yet, so nothing will arrive. Click Choose campaigns.
- A lead is marked Failed: open it to read what the tool answered, fix the cause, then click Send again. See Lead delivery and Send again.
Related
Last updated: October 12, 2026
