
Interline.chat
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Interline is a unified inbox for SMS, WhatsApp, and email, built for retail and customer service teams that are tired of losing track of conversations across channels.
Every message a customer sends, whether it is a text, a WhatsApp message, or an email, lands in one shared inbox your whole team can see and reply from. No more checking three apps. No more "I thought you answered that one."
What you get
Built for compliance
Interline is 10DLC registered and an official WhatsApp Business API provider. It supports WhatsApp Coexistence, so you keep your existing WhatsApp app, groups, and status. Opt-outs are handled automatically and end to end encryption is included. HIPAA-eligible plans are available on request.
Works with what you already have
Keep your existing phone number and connect the POS system you already run.
Plans start at $89.99/month.
Interline.chat
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Interline.chat's answer
Interline.chat's answer
Most shared inboxes were built for email and had SMS bolted on later. Interline was built the other way around, for businesses whose customers actually text them.
SMS, WhatsApp, and email all land in one view per customer, so you see the whole relationship instead of three disconnected channels.
Two things really set it apart:
It is aimed at retail and community businesses rather than enterprise ticket queues.
Interline.chat's answer
If you are weighing Interline against Podium, Front, Help Scout, Intercom, or Missive, the differences come down to three things.
It is also 10DLC registered, so your business texting is compliant from day one. A full shared inbox starts at $89.99 per month including up to 3 users.
Interline.chat's answer
Small and growing retail and service businesses whose customers reach them by text and WhatsApp rather than by phone call or support ticket.
In practice that means grocers, butchers, fish markets, food shops, caterers, and community organizations. Typically teams of roughly 2 to 20 people who share one business number and are currently juggling personal phones, WhatsApp groups, and a shared email account.
It also fits any customer service team that simply wants SMS, WhatsApp, and email in one place instead of three.
Interline.chat's answer
Interline is built by MessageCollab, a company founded in Brooklyn, New York in 2021.
The product came out of a pattern the team kept running into with local retail and service businesses: their customers had largely stopped calling and started texting and WhatsApping instead, but the businesses had no real system for handling it. Orders and questions were scattered across personal phones, WhatsApp groups, and a shared email account, and messages slipped through the cracks.
Interline launched in early 2026 to fix that. One shared inbox where SMS, WhatsApp, and email land together, automation and AI to handle the repetitive parts, and a POS connection so a customer message can turn into an order.
Based on our record, Front seems to be more popular. It has been mentiond 18 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I considered trying to use one of the integration user licenses ($10 a month) or maybe something else? These emails are coming from the "Front" email service (front.com). Source: over 2 years ago
Google image search say it's this: https://front.com/. Source: about 3 years ago
I also googled "Shift alternatives" and found front.com which has a web application. Source: about 3 years ago
I agree with others in this thread that app-based is probably the way to go - especially if you're just building for one person. Just be sure she enables push notifications with the same settings as SMS. Others have mentioned Frontline (FYI: this product is end-of-sale), Crisp, and SpokePhone. I would also add Front as a potential app to check out as they have similar functionality. Source: over 3 years ago
For the inbox with messages, email, sms and web chat, I think Front may be what you're looking for. Source: over 3 years ago
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