The best WhatsApp bulk sender tools, reviewed
1. Wassuply: best for cold outreach from many numbers
Desktop appWindows 10 and 11$397 one-time
Wassuply is a Windows app for warming up and running many WhatsApp numbers for cold outreach. It drives normal WhatsApp and WhatsApp Business numbers through WhatsApp Web sessions, so there is no API, no Meta approval, no templates and no per-message fees. Every number gets its own isolated session, browser fingerprint and optional proxy, and all of them run side by side in one window.
What it does well: warm-up before sending (at least 15 days for a new number, 30 recommended, with Warm-up Pods that pair your numbers with other owners' numbers for two-way chats); campaigns from CSV with merge fields {name} {phone} {custom1} {custom2}, spintax, AI-written messages with your own Claude, ChatGPT or DeepSeek key, and AI voice notes with your ElevenLabs key; pacing with random 30-90 second gaps, batches of 10, 1-5 minute breaks, blackout hours and daily caps; a live 0-100 ban-risk score per number, with Smart Send slowing at 60 and pausing at 80. Unlimited numbers on one licence. More on the WhatsApp bulk sender page.
Watch-outs: Windows only, no Mac or Linux yet. Your PC stays on while it sends. A brand-new number needs 15 to 30 days of warm-up before its first campaign, so it is not instant. It is unofficial, so WhatsApp's rules on automated messaging apply to it as to every WhatsApp Web sender. The download is free, but warming and sending need a licence ($397 lifetime during early access, regular price $2,499; monthly plans coming soon); all sales are final.
Best for: agencies and sales teams running outreach from several numbers who care about keeping each number alive.
2. WADesk: best WhatsApp CRM for sales teams
Desktop CRMWindows, macOS, AndroidFrom $300/year
WADesk describes itself as an AI-powered WhatsApp CRM for B2B sales teams. It manages multiple WhatsApp accounts in one dashboard with dedicated IPs and isolated sessions, and adds the things a sales team needs around sending: lead ownership, follow-up reminders, a shared lead pool, translation, an AI chatbot, Google Maps lead mining and number verification.
What it does well: team features and a broad CRM, apps for Windows, macOS and Android, and a free Basic plan with 2 ports to try it.
Watch-outs: pricing is per port, per year. Pro is $300 a year and Max $550 a year for 5 ports; 10 ports cost $599 (Pro) or $1,099 (Max) a year, and bulk messaging on the free plan is capped at 10 messages (wadesk.io/pricing). We did not find a warm-up feature on its product or pricing pages.
Best for: sales teams that live inside WhatsApp and want a CRM, not only a sender. Comparing the two directly? See Wassuply as a WADesk alternative.
3. WASender: best desktop sender for verification and groups
Desktop appWindows, macOS$29.90/month
WASender (wasender.wadesk.io) is a desktop bulk sender for contacts and WhatsApp groups. You import an Excel list, remove duplicates, verify which numbers are on WhatsApp, then send personalised messages with variables, templates and media, with intervals, pauses and scheduled starts.
What it does well: number verification before sending, group bulk sending, scheduled WhatsApp Status, a fingerprint and separate proxy per account even on the free plan, and task feedback that sorts replies into read, interested and rejected. Its FAQ is refreshingly direct: it says no tool can guarantee account outcomes.
Watch-outs: the free plan is 1 port with 30 lifetime uses of each tool. PRO is $19.90 for the first month, then $29.90 a month for 5 ports, plus $5.90 a month per extra port (wasender.wadesk.io/pricing), so the bill grows with every number. We did not find a warm-up feature on its pages.
Best for: operators who send to groups as much as to contacts, or who want list verification built into the sender.
4. WA Web Sender: best-known free extension
Browser extensionChrome, EdgeFree forever plan
WA Web Sender (wawebsender.com) is the site behind the "WA Bulk Message Sender" extension, part of the WAPlus family. It runs inside WhatsApp Web: import contacts from Excel or CSV, personalise with contact fields, add attachments, set batch size and sending intervals, then track progress, export results and retry failed messages. AI can help draft messages.
What it does well: a free forever plan and a complete single-number workflow in the browser, with honest wording that sending availability depends on your account and WhatsApp's policies.
Watch-outs: one WhatsApp account per browser session, sending from your own browser and IP, and it sends to individual contacts, not groups (the company has a separate group sender). No warm-up.
Best for: one person sending a modest list from one number.
5. Rocket Sender: best free sender with no subscription
Browser extensionChromeFree
Rocket Sender (rocketsender.co) is a free Chrome extension with a web dashboard for preparing campaigns. Its site says there is no subscription or fixed message limit. Import .xls or .xlsx files and use the column headers as variables, attach up to five images, videos or documents per message, set intervals, and pause or resume.
What it does well: genuinely free, a larger dashboard than most extension pop-ups, and clear answers in its FAQ.
Watch-outs: it cannot schedule a campaign for a future date or time, it runs on the one account open in WhatsApp Web, and there is no warm-up or per-number isolation.
Best for: trying bulk sending at zero cost on a number you already use normally.
6. Prime Sender: best extension for Excel and scheduling
Browser extensionChrome and othersFree basics, paid plans
Prime Sender (prime-sender.net) sends personalised messages from Excel or Google Sheets inside WhatsApp Web, with attachments and captions, random time gaps, batching, saved templates, delivery reports, an unsubscriber list, simple chatbot rules and message translation. Its Chrome Web Store listing says basic features are free forever.
What it does well: a long feature list for a browser tool, and a paid Advance plan that adds campaign scheduling, pausing, custom random gaps and multiple attachments.
Watch-outs: paid plans are priced by country and per user, scheduling and custom gaps sit on the higher plan, and like every extension it uses your browser and IP for one account. No warm-up.
Best for: small businesses sending scheduled updates from a spreadsheet.
7. SheetWA: best for sending from Google Sheets
Browser extensionChrome, Edge100 free messages/month
SheetWA's extension sends from WhatsApp Web in your browser using your own number, with data from Google Sheets, Excel or CSV. The free plan includes 100 messages a month, Basic 1,000 a month and Pro unlimited, and one licence covers one number (sheetwa.com/pricing). The same company also sells official WhatsApp API plans, with Meta's charges billed separately.
What it does well: spreadsheet-first sending, and a path to the official API under the same roof if you outgrow the extension.
Watch-outs: every extra number needs its own licence, and the free tier is small. No warm-up.
Best for: teams whose contact lists already live in Google Sheets.
8. WATI: best official API platform with a team inbox
Official APICloudPlan + per-message
WATI runs on Meta's WhatsApp Business API: broadcasts, a shared team inbox, AI agents, chatbots, Shopify campaigns and integrations such as HubSpot. It offers a 7-day free trial, and its pricing page says additional charges apply for template messages, which vary for marketing, utility and authentication (wati.io/pricing).
What it does well: it is the official route, so there is no WhatsApp Web automation risk, and it is built for teams handling replies at volume.
Watch-outs: the first message to a contact must be a Meta-approved template, Meta charges per delivered message since July 1, 2025, and contacts should have opted in. Not built for cold outreach to strangers.
Best for: customer messaging, support and notifications to people who opted in.
9. AiSensy: best free way to start on the official API
Official APICloudFree plan, paid broadcasting
AiSensy is an official WhatsApp Business API platform with a Free Forever plan that gets you API access, a live chat dashboard and template creation. Broadcasting needs a paid plan. Its pricing page also notes that, from October 1, 2026, every business number gets 1,000 free service messages a month, with service messages charged after that (aisensy.com/pricing).
What it does well: a zero-cost way to set up the official API, plus Click-to-WhatsApp ads tooling.
Watch-outs: the same template, opt-in and per-message rules as any API platform, and no broadcasting on the free plan.
Best for: businesses moving opted-in customer messaging onto the official API on a tight budget.