SMS & email providers

Leadara sends SMS and email through providers you connect — your own accounts with services like Nikaline, Kavenegar, and MailerSend. You add your credentials once, send a quick test, and then pick that provider on any SMS or email step in a journey. Messages go out from your sender line and are billed to your provider balance.

There's also a built-in Sandbox provider for trying journeys end to end without sending a single real message.

Connect an SMS provider and send a testTutorial · 2–4 min · Not recorded yet

Script to read

Hey everyone — in this video I want to show you how to connect a messaging provider in Leadara so your journeys and campaigns can actually send SMS and email. I'll use Nikaline as the example, but Kavenegar and MailerSend work the exact same way.

Let me head to Providers under settings. You'll see a card for each provider with a little Connected / Not configured badge. I'll click Nikaline to open it.

Inside, there are two fields: my sender number — that's the line my messages go out from — and my API key, which I grab from my Nikaline account. I'll paste both in and hit Save configuration. Notice the badge flips to Connected.

Now the important part — let's make sure it actually works before we rely on it. Down here there's a Test connection box. I'll type my own mobile number and click Send test. Give it a couple of seconds… and there's the text on my phone. That tells me my key, my sender line, and my account balance are all good.

From now on, whenever I add an SMS step to a journey, Nikaline shows up in the provider dropdown — but only because it's connected. If a provider isn't configured yet, it won't appear there, which saves you from sending into a dead end.

One last tip: if you just want to test the flow of a journey without spending any credit, switch the step to the Sandbox provider. It behaves like a real send so you can watch the journey run, but nothing actually goes out.

That's it — connect a provider, send a test, and you're ready to message your audience for real.

What you can do

• Connect an SMS provider — Nikaline or Kavenegar — with your sender number and API key.
• Connect an email provider — MailerSend — with your API token and a verified from address.
• Send a test message to your own phone or inbox to confirm the connection before you go live.
• Pick a provider per step — every SMS and email action in a journey lets you choose which connected provider sends it.
• Use the Sandbox to rehearse a journey without sending real messages or spending credit.

How it works

Open Providers in your workspace settings. Each provider is a card showing whether it's Connected or Not configured. Click one to enter your credentials and save them — they're stored securely against your workspace, and the API key field is always masked.

Once a provider is connected:

• It appears in the provider picker on SMS or email steps.
• The Test connection panel sends a single real message so you can verify everything works.
• Delivery results show up in your SMS log with the provider that sent each message.

Each provider bills your account, so top-ups, sender-line approvals, and delivery rules are handled on the provider's side.

Tips

• Test before you launch. A connected badge only means credentials are saved — the test send proves the key, sender line, and balance are all valid.
• Iranian mobile numbers are accepted in the usual formats (09…, +98…); Leadara normalizes them for you.
• Keep a sender line approved with your provider. If sends fail, check your balance and that the sender number is assigned to your account.
• Rehearse with Sandbox when building a new journey, then switch the step to your real provider when you're confident.