Managing Email and SMS in a Unified Inbox
October 15, 2026
When your email and SMS conversations live in separate tools, you lose the full picture of your prospect. LexisOS threads both channels into a single, shared Unified Inbox so your entire revenue team can see the full history on one contact record.
What you need to know first
Revenue teams often struggle because email and SMS exist in different silos. A sales rep might send an email via one provider while simultaneously texting a prospect from a mobile device or a separate SMS tool. This creates a fragmented history where no one has a complete view of the relationship. LexisOS solves this by pulling Gmail, Microsoft 365, IMAP email, and Twilio-based SMS into a single three-pane interface. Every message is threaded directly to the specific Lead or Contact record, ensuring the team stays aligned.
Getting it configured
You can enable these channels independently because LexisOS is a composable platform. To set up your Unified Inbox, follow these steps:
Navigate to your organization settings to connect your email providers. You can link Gmail or Microsoft 365 using OAuth, or add a generic IMAP account.
Connect your Twilio account under the SMS and Voice settings. This links your existing Twilio credentials to the shared team inbox.
Verify that your consent management is active. LexisOS checks for consent against your Twilio account before any SMS is sent, and it enforces hard-blocks if a prospect opts out via STOP.
Assign team members to the shared inbox. Because the system is built for teams, you do not need to manage per-rep phone numbers.
The limits you will hit
Understanding the boundaries of the system is necessary for planning your workflow. Gmail accounts receive real-time push notifications, while other providers rely on minute-level delta syncs. SMS is strictly tied to your own Twilio account; you cannot use a personal mobile number as a direct integration. Additionally, while the system handles threading well, some administrative tasks like merging duplicate contacts currently require using the MCP server, as they lack a dedicated web UI. Be aware that your usage is governed by the credits and limits of your chosen pricing tier, ranging from the Solo plan to the Scale plan.
Frequently asked questions
Why should I use a Unified Inbox for sales?
A Unified Inbox prevents communication silos where email and SMS threads live in different tools. By consolidating these channels, every team member can see the full history of a contact on one timeline. This eliminates the need to jump between platforms to verify what was said, ensuring that your team maintains a consistent, informed conversation with every prospect.
Does LexisOS support my existing email provider?
LexisOS supports Gmail, Microsoft 365, and generic IMAP accounts. The platform uses OAuth for secure authentication and performs a minute-level delta sync to keep your inbox current. Gmail users additionally benefit from real-time push notifications, ensuring that incoming messages appear in the shared team view as soon as they arrive.
How does SMS work within the LexisOS inbox?
SMS functionality in LexisOS runs on your own Twilio account, providing a shared team inbox rather than relying on individual rep numbers. The system supports both SMS and MMS, and it automatically checks for consent against your Twilio settings before sending. If a prospect sends a STOP message, the system hard-blocks all future outgoing messages across every channel.
Can I see email and SMS in the same thread?
Yes, LexisOS threads both email and SMS messages to the corresponding contact record. This multi-channel approach creates a single, unified timeline for each prospect. When you open a contact, you see the entire history of interactions regardless of whether the message originated from a browser-based email client or an SMS gateway.
Once it is running
Before you start, consider this scenario. A prospect emails your team asking for a quote. Your rep replies via email. Two days later, the prospect texts your team asking for a status update. Without a Unified Inbox, the rep might miss the text or reply without seeing the previous email context. With LexisOS, the SMS appears in the same thread as the email. The rep sees the full history, including the initial request and the subsequent SMS, allowing for a coherent response. Weekly, you should check your reports to ensure your response times remain consistent across both channels.
Stop managing your revenue data across fragmented tools. Centralize your communication today.