Firm branding: client portal, login and emails in your firm's colours
Accounting and finance. Content verified: 13 October 2026.
The "Firm branding" screen (the "Firm branding" menu, available to the firm's owner) lets you show clients the portal, login screen and email messages in your firm's colours. The branding applies only to your firm's clients: other organisations see the standard Zaksio look.
What you set
- Brand name and login screen address in the form /b/your-firm (3-40 characters: lowercase letters, digits and single hyphens; some words are reserved).
- A logo in PNG, JPG or SVG format (up to 256 KB) and an optional browser tab icon (up to 64 KB). We check the file type by its content, and we strip scripts and external references from SVG files.
- Primary colour (buttons, links, active elements) and an optional accent colour. We choose the text colour on buttons automatically to meet WCAG contrast. We reject a primary colour that is too light, and flag a colour with contrast below the recommended level with a warning.
- Welcome text, phone, email and working hours: they appear in the portal, on the login screen and in the email footer.
- Sender name and reply address of emails. The technical sender is always the Zaksio domain, and client replies go to your address.
- Custom assistant name visible to clients (optional).
Where the branding appears
- The client portal and the view of a company linked to the firm: logo and colours in the header, browser tab title, welcome text and a footer with the firm's contact details.
- Login screen at your own address, e.g. app.zaksio.pl/b/biuro-kowalski.
- Emails to clients: invitations, password setup links, message notifications and reminders about missing documents. They have a header with the logo (PNG or JPG) or the brand name, a colour, a footer and the firm's reply address.
- Letters on behalf of the firm in PDF: the logo (PNG or JPG) in the header of the first page.
In the preview next to the form, you see the portal on a phone and an email message before saving. After saving, the branding covers companies where you are the owner, administrator or firm expert; you add a new company with the "Apply branding to new companies" button.
Zaksio name and footer
In the client view we do not show the Zaksio name in the header, the tab title or on the sign-in screen. A small "Powered by Zaksio" note stays in the footer; you can turn it off on the Accounting firm plan. The brand name, texts and assistant name must not contain the word Zaksio, so that nobody can impersonate the official service.