Mailform & Clio
Mailform with Clio has a single purpose - to make it easy to send your clio documents via the USPS! We have exciting new plans for 2026 but please let us know if there is something missing we can help you with.
What's New (January 2026)
Document Browser - New hierarchical view for browsing documents by client and matter
Type View - Alternative view to filter documents by document type
Legal Playbooks - Pre-configured workflows for Managing Mail to Courts, Marketing or keeping in touch with clients, and Billing.
Bulk Document Mailing - Select and mail multiple documents at once (not just bills)
Improved Performance - Faster ways to find files and send mail
Connect your Clio account to mail invoices and documents directly from your legal practice management system.
Getting Started
Connecting Mailform to Clio
Click Connect Clio
Log in to your Clio account when prompted
Authorize Mailform to access your Clio data
You'll be redirected back to Mailform with your invoices loaded
What Mailform Can Access:
Unpaid invoices and client billing information
Matters and associated documents
Client contact details for mailing addresses
Mailing Clio Invoices
The Clio Bills page lets you bulk mail unpaid invoices to your clients with just a few clicks.
Step 1: View Your Unpaid Invoices
Once connected, Mailform automatically displays all unpaid invoices from Clio. Each invoice shows:
Column | Description |
|---|---|
Invoice | The invoice number from Clio |
Send To | Recipient name and mailing address |
Issued | Date the invoice was created |
Balance | Outstanding amount due |
Previously Sent | ✓ if you've mailed this invoice before |
Print & Mail? | Toggle to select for mailing |
Step 2: Select Invoices to Mail
To select individual invoices:
Toggle the switch in the "Print & Mail?" column to Yes
To select all invoices at once:
Click Select All at the top of the table
To clear your selection:
Click Select None to deselect all invoices
Step 3: Review and Edit Addresses
Before mailing, verify each recipient's address is complete and correct.
To edit an address:
Click on the address in the "Send To" column
The address editor opens with these fields:
Name (required)
Company (optional)
Address Line 1 (required)
Address Line 2 (optional)
City (required)
State (required)
ZIP Code (required)
Make your changes
Click Save
Note: If an address is missing required information, you'll see an error message when trying to select that invoice. Click the address to add the missing details.
Step 4: Confirm and Mail
Click Confirm to review your selected invoices
Review the list of invoices to be mailed
Click Mail All to create your order
You'll be redirected to your Mailform workspace where you can:
Add a return address
Choose mail class (First Class, Certified Mail, etc.)
Complete payment
Managing Clio Documents
The Clio Document Picker lets you upload documents from your Clio matters directly into Mailform for mailing.
Accessing the Document Picker
Go to your Mailform Workspace
Click Upload from the Cloud from any upload Area
Select From Clio as your document source
The Document Picker modal opens
Step 1: Find Your Matter
The picker opens showing your Clio matters. To find a specific matter:
Search: Type in the search box to filter by matter name or number
Scroll: Browse through the list of matters
Select: Click Select next to the matter containing your documents
Step 2: Choose Documents
After selecting a matter, you'll see all documents in that matter only:
Click Upload next to any document you want to mail
The document is marked with a blue "UPLOADED" label
Continue uploading additional documents as needed
Click X to close when finished
To go back and choose a different matter:
Click « Matters in the bottom left corner
Step 3: Complete Your Mailing
After uploading documents:
They appear in your Mailform workspace
Add recipient addresses
Choose your mail options
Complete your order
Frequently Asked Questions
Connection Issues
Q: Why do I see "Your Mailform account is currently not connected to Clio"?
A: This means you need to authorize the connection. Click Connect Clio and follow the authorization steps. If you've connected before, your authorization may have expired—simply reconnect.
Q: The Connect button isn't working. What should I do?
A: Try these steps:
Clear your browser cache and cookies
Disable any pop-up blockers
Try a different browser
If the issue persists, contact support@mailform.io
Invoice Issues
Q: Why don't I see any invoices?
A: Mailform only shows unpaid invoices with an outstanding balance. Check that:
You have invoices in Clio with balances due
The invoices aren't marked as paid in Clio
Your Clio connection is active
Q: Why can't I select a specific invoice?
A: The invoice is missing required address information. Look for an error message like:
"The name is missing"
"The address is missing"
"The city is missing"
Click on the address to edit and add the missing fields.
Q: What if a client's name or company is too long?
A: Mailing addresses have a 40-character limit per line. You may need to:
Abbreviate the company name (e.g., "Inc." instead of "Incorporated")
Use initials for long names
Remove unnecessary titles
Document Issues
Q: Why don't I see any documents in my matter?
A: Check that:
The matter actually contains documents in Clio
The documents are not in subfolders (the picker shows top-level documents)
Your Clio connection is active
Q: Can I upload multiple documents at once?
A: Yes! The document picker allows you to upload multiple documents from the same matter. Each document you upload is marked "UPLOADED" so you can track what you've added.
Q: What file types can I upload?
A: Mailform accepts PDF documents. If your Clio document is in another format, you may need to convert it to PDF first.
Billing & Delivery
Q: How much does it cost to mail Clio invoices?
A: Standard pricing applies:
First Class Mail: Starting at $2.99 (as low as $1.50)
Certified Mail: Starting at $11.98 (as low as $8.99)
Volume discounts are available. See mailform.io/pricing for details.
Q: How long does delivery take?
A: Typical delivery times:
First Class or Certified Mail: 4-8 business days
USPS Priority Mail Express: 1-3 business days
Q: Can I track my mailings?
A: Yes! For Certified Mail, you'll receive USPS tracking information. All mailings can be viewed in your Mailform order history.
Tips for Law Firms
Best Practices
Mail invoices promptly - Send invoices as soon as they're generated for faster payment
Use Certified Mail for important notices - Legal deadlines often require proof of mailing
Keep addresses updated - Verify client addresses in Clio regularly
Review before mailing - Always double-check the confirmation screen before clicking "Mail All"
Tracking Previously Sent Invoices
The "Previously Sent" column shows which invoices you've already mailed through Mailform. This helps you:
Avoid duplicate mailings
Track which clients have received bills
Follow up on unpaid invoices after mailing
Need Help?
If you're experiencing issues with the Clio integration:
Check your connection: Go to mailform.io/webapp/clio.html and verify you're connected
Refresh the page: Sometimes a simple refresh resolves loading issues
Reconnect Clio: Disconnect and reconnect your Clio account
Contact support: Email support@mailform.io with:
Your Mailform account email
Description of the issue
Screenshot of any error messages
