Broadcast to 100 million contacts, hold delivery above 90%, and watch every send land live — not two hours after the campaign ends.

Official Meta Tech PartnerMeta-certified specialists set up, scale and troubleshoot your account.
Shopify and 20+ connectorsOrder, shipping and cart events flow in without engineering work.
Your customers already live in this inbox. The only question is whether your infrastructure can reach all of them at once.
Put your brand in that inbox this week.
Every campaign, inbox, and journey on the same infrastructure — so nothing gets lost between tools.
A limitless broadcasting experience on the official Business API — no grey routes, no account roulette.
UP TO 100M CONTACTS PER CAMPAIGN · 5M CONTACTS UPDATED IN 5–7 MIN
SMART THROTTLING PROTECTS YOUR QUALITY RATING
Every reply from every campaign lands in one team inbox. Route by tag, campaign, or attribute, and let the AI agent handle the first response.
Build the flow once and let it run. Serri listens for delivery, reads, clicks, and replies, then moves each contact down the branch that fits.
Most platforms hand you a report after the broadcast ends. Serri streams from the first message, so you can kill a bad template at 200,000 instead of 10 million.
One contact record, one set of journeys. When WhatsApp isn't the right surface, Serri falls back to the channel that is.

Official Business API. Broadcasts, team inbox, AI agents and payments in one thread.

Verified sender, images, carousels and tappable replies inside the native Android inbox.

DLT-compliant transactional and promotional routes. The fallback that always lands.

Long-form receipts, statements and newsletters, triggered from the same journey builder.
ALSO AVAILABLE · SERRIIVR · VOICE · AI CHATBOT
Want more than one channel? We'll scope the mix on the call.
Talk to a team already running your kind of volume.
Join 100+ brands running WhatsApp at scale with zero setup fees and answers in under ten minutes.
Tell us a bit about you and a Serri specialist will reach out on WhatsApp shortly.
Thank you — a member of our team will connect with you shortly.