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Nitro features

Everything you need to run WhatsApp campaigns, safely

Nitro sends your messages, pictures, documents and polls through the WhatsApp numbers you already use, at a safe, human pace. Replies and opt-outs arrive in one inbox, and your contacts never leave your PC.

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Your numbers, working together

Use the WhatsApp numbers you already have, side by side.

Several numbers per campaign

Share one campaign across your numbers. Each contact keeps the number that first wrote to them, with one backup number in case that one drops.

Nothing lost, nothing sent twice

If a number disconnects, its waiting messages move to your other numbers after two minutes. Before any retry, Nitro checks the message did not already go out.

Health and warm-up per number

Each number shows its status, health, today’s count against its limit and its warm-up day, and reconnects by itself. Give a number its own daily limit and rules.

Contacts and lists

Bring in your contacts from anywhere and keep them tidy.

Import Excel or CSV

Import CSV, .xlsx or .xls files of up to 200,000 rows. Columns are matched for you; set a default country, skip landlines, put the contacts in a group, and download the rows that need fixing.

Leads from Rovero

Rovero exports are recognised on import, and Rovero’s Send to CRM and webhook can push new leads straight into Nitro on the same PC.

Groups, tags and filters

Sort contacts into groups and tags, filter them, and check which numbers are on WhatsApp before you send.

Save to Google Contacts

Make a file of up to 3,000 contacts at a time to import into each phone’s Google account, with the steps shown. Opted-out, landline and non-WhatsApp numbers are left out.

Messages people want to read

Every contact gets a message that feels written for them.

Text, media and polls

Send text of up to 4,096 characters, pictures, video, audio files and documents with a caption, or ask a question with a poll of 2 to 12 answers.

Personal fields

Greet each contact by name with fields such as {{first_name|there}}: the word after the bar is used when a field is empty.

Spin text and variants

Write {Hi|Hello|Good morning} once and each contact gets one of the words. Add up to 50 variants of a message and a random number with {{random}}, so no two messages look the same.

Preview, spam score and test send

See the message the way WhatsApp shows it, check its spam score, and send yourself a test before the campaign starts.

Campaigns on autopilot

Set it up once; Nitro does the sending.

A campaign in five steps

Choose who, the message, the numbers and when, and see how long it will take before you start.

Send now or schedule

Start straight away or pick a day and time. Sending hours follow your clock or each contact’s own time zone, and you can skip people who got a campaign in the last few days.

Pause, resume, retry

Pause and resume at any time, retry the messages that failed, duplicate a campaign, and export its results to CSV.

Watch it live

A live view shows what is going out right now, with delivered, read and replied counts and poll results as they come in.

Built-in sending safety

Sensible limits are on from the start, and you stay in control of them.

A human pace

By default: random waits of 35 to 90 seconds between messages, a break every 25 messages, and up to 40 an hour and 200 a day per number. Change any value; one past its safe line gets a “Higher ban risk” badge.

Warm-up for new numbers

A new number starts with 20 messages on its first day and adds 10 a day, so it builds a normal sending history.

Checks before sending

Nitro checks a contact is on WhatsApp before the first message, skips landlines, and pauses a number by itself when several contacts fail in a short time.

Opt-outs handled for you

Replies such as STOP or UNSUBSCRIBE put the contact on your opt-out list with an automatic confirmation, and an unsubscribe line can go at the end of your messages.

Replies and results

See what works and answer the people who write back.

One inbox for replies

Replies, poll votes and opt-outs from all your numbers arrive in one inbox. Answer with text or a file, from the number the contact knows.

Dashboard and reports

Sent, delivered, read, failed and replies at a glance, a 7-day chart, and reports by day, number and campaign that you can export to CSV.

Your contacts stay on your PC

Contacts, messages and media are stored on your own PC. Our servers only see your sign-in, the app version, the PC’s name and the day’s message count for your plan.

What you need

  • A Windows 10 or 11 PC (64-bit) and an internet connection
  • One or more phones with WhatsApp, linked the way WhatsApp Web is
  • No administrator rights; setup adds Microsoft Edge WebView2 if it is missing
  • A free Leads ADD account

Questions? Read the Nitro FAQ.

Try Nitro on your own PC

No card required. Your 3-day free trial starts the first time you sign in to the app.

Start free trial Read the FAQ