Email Settings (SMTP)Pro
Configure your own email server to send invoices from your email address.
Overview
By default, TeeckIn sends invoices from our email address. With custom SMTP, you can send invoices directly from your own email address. This looks more professional and helps ensure your emails reach your clients' inboxes.
Pro Feature
Why Use Custom SMTP?
Without Custom SMTP
- Invoices come from "noreply@teeckin.com"
- Replies go to TeeckIn, not you
- May land in spam folders
- Less professional appearance
With Custom SMTP
- Invoices come from your email
- Replies go directly to you
- Better deliverability
- Professional branding
What You'll Need
To set up custom SMTP, you'll need the following from your email provider:
- SMTP Server - The hostname (e.g., smtp.gmail.com)
- Port - Usually 587 (TLS) or 465 (SSL)
- Username - Usually your email address
- Password - Your email password or an app password
Warning
Configuring SMTP
- 1Go to Settings → Invoicing
- 2Open the Email / SMTP section
- 3Click Configure Email
- 4Enter your SMTP host and port
- 5Enter your username and password
- 6Enter the "From Email" (the address invoices will come from)
- 7Enter the "From Name" (e.g., "Your Company Billing")
- 8Check "Use SSL/TLS" if your provider requires port 465
- 9Click Save Settings
After saving, click Test Connection to verify everything works. You'll receive a test email at your configured address.
Common Provider Settings
Gmail
smtp.gmail.com, Port 587, requires app password
Enable 2FA and create an app password at myaccount.google.com
Outlook / Microsoft 365
smtp.office365.com, Port 587
Zoho Mail
smtp.zoho.com, Port 587
Custom Domain (via Google Workspace)
smtp-relay.gmail.com, Port 587, requires app password
Tip
Billing entity SMTP
In a team billing entity, you can configure SMTP at the billing entity level. All team members will send invoices from the billing entity's email address.
- 1With the billing entity selected, go to Settings → Invoicing
- 2Open the Email / SMTP section
- 3Configure SMTP as described above
Note
What Uses Custom SMTP
When configured, custom SMTP is used for:
- Sending invoices to clients
- Invoice reminders
- Payment receipts
System emails (password resets, verification emails, etc.) always come from TeeckIn's servers.
Troubleshooting
Connection Failed
- Verify the hostname and port are correct
- Check if SSL/TLS setting matches the port (587 usually needs TLS, 465 needs SSL)
- Ensure your firewall isn't blocking outbound SMTP
Authentication Failed
- Check that you're using an app password if required
- Verify the username (usually your full email address)
- Some providers require enabling "less secure apps" access
Emails Not Delivered
- Check your spam/junk folder
- Verify SPF/DKIM/DMARC records for your domain
- The "From Email" must be authorized to send from your SMTP server
Removing SMTP Configuration
To stop using custom SMTP and revert to TeeckIn's default:
- 1Go to Settings → Invoicing and open the Email / SMTP section
- 2Click Remove
- 3Confirm the removal
Invoices will then be sent from TeeckIn's email address.