Open Settings → Email branding to set:
- Logo — uploaded image (PNG / JPG / SVG up to 2 MB). Renders at the top of every transactional email and in the step bar on the signing page
- Brand color — 7-character hex (#1B2A4A). Drives the heading color and the "Sign Document" CTA in emails, and the step indicators on the signing page
- Display name in From header — what appears as the sender name in your recipient's inbox preview ("Acme Legal" instead of "SahlSign"). Defaults to your organization name if not set
- Reply-To address — where signer replies route to (e.g.,
contracts@yourcompany.com)
All four are tenant-controlled and sanitized server-side (hex regex on color, HTTPS-only allowlist on logo URL, header-injection chars stripped from From-name) so a misconfigured value can't break email rendering.
What signers see
By default, with no branding configured:
From: SahlSign <noreply@smtp.sahlsign.com> Subject: You have a document to sign · لديك مستند للتوقيع: NDA [generic blue heading + button]
With branding configured:
From: Acme Legal <noreply@smtp.sahlsign.com> (or
contracts@acme.comif you've verified your domain) Subject: You have a document to sign · لديك مستند للتوقيع: NDA [your logo, your brand color heading + button, "Processed by SahlSign on behalf of Acme Legal" footnote]
Sending FROM your own domain
The display-name swap above ("Acme Legal <noreply@smtp.sahlsign.com>") gets you 90% of the way there — most inbox previews only show the display name. To send the email entirely from your own domain (so the address itself reads contracts@yourcompany.com), set up domain verification under Settings → Send from your own address. Takes about 5 minutes once you have access to your DNS provider. See setting up a custom From address.