Deep customization for your authentication experiences

You've spent months perfecting your product's design. Every color, button, and animation is deliberate—an extension of your brand's identity.

Then your users click "Sign In" … and land on a generic login page that looks nothing like your app.

Moments later, they get a verification email from an unfamiliar domain. Gmail flags it as suspicious. They hesitate—maybe even abandon the flow. That's the moment trust breaks. And trust, in authentication, is everything. It's often your brand's handshake, the first impression of reliability, professionalism, and safety.

Scalekit gives you deep control over every touchpoint to make that handshake unmistakably yours.

What was already there: Login page customization

Your login page should look and feel like your app—not an out-of-the-box template. As a refresher, with Login Page Branding, you can customize:

Visual identity

• Upload your logo and favicon
• Match your brand colors with full color picker control
• Adjust border radii (small, medium, or large) for buttons and containers
• Control logo positioning (inside or outside the login box)
• Set logo and header alignment (left, center, or right)

Layout control

• Position social login buttons exactly where you want them
• Configure background styles using full CSS shorthand—solid colors, gradients, images, patterns, or combinations with position, size, repeat, origin, clip, and attachment properties
• Apply background images with flexible positioning (center, top, left) and sizing (cover, contain, repeat)

Newly launching: Advanced styling

• Use CSS background shorthand for complete control: url('https://example.com/image.jpg') center center/cover no-repeat
• Create gradient backgrounds: linear-gradient(135deg, #4568DC, #B06AB3)
• Set fallback colors for images: #f5f5f5 url('image.jpg') center/cover
• Design tiled patterns with custom positioning and repeat rules

Whether your design language is minimalist or expressive, Scalekit's customization tools let you control every visual element from the very first pixel. Preview changes instantly in your dashboard under Customization → Branding—no code required.

What was already there: Bring your own email delivery infrastructure

Scalekit provides email delivery out of the box, but you can integrate your own email provider for complete control over sender domains, deliverability, and compliance. Use your own SMTP provider—SendGrid, Amazon SES, Postmark, or any SMTP service.

That means:

• Emails come from your verified domain
• You maintain your sender reputation
• Your messages pass enterprise compliance checks
• You get deliverability insights in your existing analytics stack

Setup takes minutes: enter your SMTP host, port, credentials, and sender info. Everything is encrypted, secure, and under your control. Because your brand deserves to own its communication end to end.

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Newly launching: Design custom email templates that speak your voice

But now, you can go ahead and make sure each auth mail is crafted in your own voice and with your message.
After all, default templates get the job done. Custom templates get your message heard.

Scalekit's template engine lets you rewrite every authentication email—from magic links to password resets—in your own tone and style. You can:

• Edit subject lines, HTML, and plain text versions
• Use JET syntax for logic, loops, and conditionals
• Inject dynamic variables at runtime (like {{first_name}}, {{company_name}}, or {{onboarding_resources}})
• Send multipart emails—HTML for modern clients, plain text for legacy ones
• Control every aspect of the message structure and content

All accessible under Emails → Templates in your dashboard. Full control. No compromises.

What you'll need

• For login page branding: logo and favicon files, color codes, CSS background properties, and layout preferences
• For custom email delivery: SMTP credentials, verified sender domain, and display name
• For custom templates: your HTML designs and variable mappings

Start today

Everything you need to deeply customize your experience—login pages with full CSS control, custom email delivery, and personalized templates—is live now.

Check out the guides on Login Page Customization and Email Customization, or reach out to our team to walk through your setup.