Our Multiple Lines plan lets you create and manage several phone lines (also called inboxes) under one M1 account. Each line has its own phone number, call and message history, AI Receptionist, and settings. It's ideal for users who:
Run multiple businesses
Want to keep personal and work calls separate
Need distinct phone numbers for different workflows
What's included in the Multiple Lines plan
Add as many phone lines as you need (up to 15 right now)
Each line comes with:
Its own inbox
Unique phone number
Separate AI Receptionist
Caller ID, Call Forwarding, and settings
Customize inbox name, icon, and color to stay organized
Centralized billing for all your lines (currently handled by Apple)
📌 The plan is designed for individual use. Inboxes are private and cannot be shared with teammates.
How to switch to the Multiple Lines plan
To use Multiple Lines, you'll need to upgrade your plan. You can do this anytime after onboarding:
Open the M1 app
Go to Settings > Manage Plan
Select Multiple Lines and follow the steps to add your second line
👉 Once upgraded, you can add as many lines as you need (up to 15 right now) at no additional cost.
How to add a new line
Go to Settings > Inboxes
Tap New Inbox
Choose a new phone number
Set a name, icon, and color to help you stay organized
What settings does each line have?
Each line is fully customizable with its own:
AI Receptionist (with unique greeting and call handling settings)
Voicemail settings
Call Forwarding and Caller ID
📌 Note: Some features like calendar scheduling are still set at the account level for now.
Switching between lines
Once you have multiple inboxes, you'll see a dropdown in your Inbox view. You can:
Filter by inbox
View message/call history per line
Choose which line to use when calling or texting
M1 will remember your preference per contact, but you can manually change it anytime from the Contact Card.
FAQ
Can I invite teammates to a line?
Currently, inboxes created under the Multiple Lines plan are private and cannot be shared with others.
If you want to collaborate with teammates:
Use the Shared Line plan instead
It allows you to share your current line only with unlimited invited members
Everyone on the Shared Line can access the same messages, calls, and voicemail activity
Can I use Multiple Lines and Shared Line at the same time?
No. You can only subscribe to one plan at a time.
What happens if I switch from Shared Line to Multiple Lines?
Your subscription is credited toward the new plan - no double charges.
Any teammates you've invited will lose access.
You'll keep your existing inbox and can then add more lines.
📌 If you're using Shared Line for collaboration, we don't recommend switching to Multiple Lines unless you're managing things solo.
Will I lose data when upgrading to Multiple Lines?
No. Your existing messages, calls, and settings will remain intact.
Can I downgrade from Multiple Lines later?
Yes; you can switch back to a Single or to Shared Line plan anytime by going to Settings → Manage Plan in the app.
If you switch to Shared Line, your new subscription will take effect immediately, and you'll be able to share your inbox with teammates.
If you switch to Single Line, your current plan will stay active until the end of your billing period.
What happens if I downgrade?
Your additional inboxes are not deleted, but their settings and filters are hidden.
Here's what changes:
You'll lose access to inbox-specific settings and the ability to filter your view by inbox.
Conversations will still be accessible, but you won't see which inbox they belong to.
How much does the Multiple Lines plan cost?
The plan is billed through Apple and is priced at:
$49.99/month or $299.99/year for new users
📌 All billing and plan changes are handled via Apple. For more info, visit our pricing page here.
Can I have separate voicemail and AI Receptionist greetings for each line?
Yes. Each inbox has its own greetings and Receptionist settings, which can be customized independently.
Can I set separate Call Forwarding and Caller ID for each inbox?
Yes. Each inbox has its own independent settings, including Call Forwarding and Caller ID. You can customize these per inbox by going to the Inbox Settings section.
How many lines can I create?
Up to 15 inboxes per account.
Can I remove a line?
Yes, you can remove a line.