If you want your emails (like login links, confirmations, etc.) to come from your own domain, you can set up custom SMTP with Resend — a free, reliable email service. This is only available to Business package FitMetrics users.
Here’s exactly how to do it 👇
✅ Step 1: Enable Custom SMTP in FitMetrics
Go to Settings
Click Blood Test Portal
Open Email Templates → then SMTP Configuration
Toggle on “Use Custom SMTP Server”
Now leave this open — we’ll come back to fill it out.
🔧 Step 2: Create Your Resend Account
Go to resend.com and sign up (free)
Skip the intro/setup steps and go directly to Domains
Click Add Domain
Enter your domain (e.g.,
xeniosfitness.com)Select your region (e.g., US)
Click Add
🌐 Step 3: Add DNS Records
Resend will show you DNS records to add (SPF, DKIM, DMARC, etc.)
Go to your domain host (Squarespace, GoDaddy, Bunny, etc.)
Add all DNS records exactly as shown
⚠️ Important:
If you’re managing your DNS with another provider (like Bunny), make sure you're editing the correct one.
📌 Tip: These records might take up to 24–72 hours to verify, but sometimes it's instant.
🧪 Step 4: Create Your API Key in Resend
Go to Settings → API Keys
Click Create API Key
Name it something like
FitMetrics, give it Full Access, and click AddCopy the API key (this will be your password in FitMetrics)
📥 Step 5: Fill in the SMTP Fields in FitMetrics
Back in FitMetrics, enter the following:
Sender Name: Your business name (e.g., Xenios Fitness)
Sender Email: e.g.
[email protected]SMTP Host:
smtp.resend.comPort:
465Use SSL/TLS: ✅ Yes
Username:
resendPassword: Your Resend API key
Click Save, then Send Test Connection
✅ Step 6: Verify It’s Working
Go back to resend.com → Emails
You’ll see if the test email was delivered successfully
If it worked, you’re good to go!
You can now use this screen to verify any client email delivery (e.g., if someone says “I didn’t get the email”).
🔁 Optional Tips
🔁 Enable automatic tracking in Resend settings if you want delivery analytics
🛑 Disable “Host can stop/pause cloud recording” on Zoom if you're combining this with Zoom recording features
✅ Always double-check that the domain is verified before testing
You’re done! All FitMetrics emails will now come from your own domain, not from a generic email address — boosting deliverability and brand trust.