Signature builder

Fill in your details. The preview below updates as you type.

Live preview

How your signature will look. Use the buttons above to copy it.

How to install your signature

Pick your email client below. The instructions for your detected operating system are expanded by default.

Three export modes are available — pick whichever fits where you're pasting:

  • Copy code signature — copies HTML markup as plain text. For pasting into a signature editor that expects raw HTML (Outlook UI, OWA, Gmail settings).
  • Copy design signature — copies the rendered signature as rich content. For pasting into a document (Word, Pages) or directly into an email compose body as one-off content.
  • Download .htm — saves a self-contained file. For dropping straight into the Outlook Signatures folder, no Outlook UI involved.
Outlook Classic (Windows)▾

Method 1 — via the Outlook UI (recommended)

  1. Click Copy code signature above.
  2. In Outlook: File → Options → Mail → Signatures...
  3. Click New, name it (e.g. "Blastic"), and paste in the editor below.
  4. Under Choose default signature (right side), set it for new messages and replies.
  5. Click OK. New emails (Ctrl+N) will now include your signature.

Method 2 — via the filesystem (foolproof)

  1. Click Download .htm above to save the signature file to your Downloads folder.
  2. Open %APPDATA%\Microsoft\Signatures\ in File Explorer (paste in the address bar).
  3. Move the downloaded file there. No need to restart Outlook — it picks up the file on next compose.
  4. Set it as default in File → Options → Mail → Signatures... (right column).
Outlook for Mac▾

Recommended button: Copy code signature

  1. Click Copy code signature above.
  2. In Outlook: Outlook → Settings → Signatures (or Preferences → Signatures on older versions).
  3. Click + to add a new signature, give it a name.
  4. Paste the HTML in the editor. The preview should match the live preview above.
  5. Under Choose default signature, assign it to your account for new messages and replies.

Tip: New Outlook for Mac uses the same UI as Outlook on the Web — see that section if your menu looks different.

Outlook on the Web (OWA)▾

Recommended button: Copy code signature

  1. Click Copy code signature above.
  2. In OWA, click the gear icon (top right) → View all Outlook settings.
  3. Navigate to Mail → Compose and reply.
  4. Under Email signature, paste the HTML in the editor.
  5. Tick the boxes to auto-include on new messages and replies/forwards.
  6. Click Save.
Gmail (web)▾

Recommended button: Copy code signature

  1. Click Copy code signature above.
  2. In Gmail, click the gear icon (top right) → See all settings.
  3. Stay on the General tab and scroll down to the Signature section.
  4. Click Create new, name it, and paste the HTML in the editor.
  5. Under Signature defaults, set it for new mail and replies.
  6. Scroll to the bottom and click Save Changes.

Note: Gmail's editor occasionally strips inline styles. If your signature looks broken after pasting, try Cmd/Ctrl+Shift+V (paste without formatting) and then redo it via the source-edit option if available.

Apple Mail (macOS)▾

Recommended button: Copy design signature

  1. In Mail: Mail → Settings → Signatures.
  2. Pick your account in the left list, click + to add a signature.
  3. Click Copy design signature above and paste — Apple Mail prefers visual paste over raw HTML.
  4. Drag your new signature into the right column to bind it to the account.
  5. In the dropdown at the bottom, set it as the default.
Mobile (iOS / Android)▾
  • Outlook for iOS/Android: inherits the signature from your desktop Outlook account. No separate setup needed.
  • Apple Mail (iOS): only supports plain-text signatures. Configure under Settings → Mail → Signature with a text-only fallback.
  • Gmail app: uses a per-device signature, separate from web. Set it in the app's Settings → [your account] → Mobile Signature. HTML is not supported, plain text only.

Troubleshooting

Common issues and what causes them.

My icons show as white rectangles▾

Outlook is blocking external image downloads (a default privacy feature). The image element is reserved at its expected size but the actual content never loads.

Fix in Outlook Classic Windows:

  1. File → Options → Trust Center → Trust Center Settings...
  2. In the left sidebar, click Automatic Download.
  3. Uncheck "Don't download pictures automatically in standard HTML email messages..."
  4. Click OK and restart Outlook.

If your IT department locks this setting via Group Policy, ask them to whitelist *.blastic.com in the Internet Trusted Zone instead.

Recipients see a red X / broken image▾

The recipient's email client is blocking remote image downloads, often via corporate IT policy. This is expected behavior — they can usually click "Download pictures" in the message header to view them. Nothing to fix on the sender side.

My signature renders as a very tall table▾

Older signatures generated before April 2026 used SVG icons that Outlook Classic Windows could not size correctly. Regenerate your signature using this tool — the new version uses PNG icons that render reliably.

If you still see this with a freshly-generated signature, please ping your IT contact — there may be an Outlook update that affects rendering.

Gmail strips my signature formatting▾

Gmail's compose editor sometimes normalizes pasted HTML and removes inline styles. Two workarounds:

  • Paste the signature in the Gmail Settings page (under General → Signature), not directly in a compose window.
  • If formatting is still broken, copy from this tool and paste using the source-HTML option in Gmail's signature editor (look for the <> icon).

Before you send to clients

Quick QA checklist for new signatures.

Cross-client testing checklist▾
  • Send a test email to yourself in Outlook Classic Windows — the most fragile renderer.
  • Open the same test in Outlook on the Web.
  • Forward to a Gmail address and verify rendering there.
  • Check on your phone (Outlook iOS/Android or default mail app).
  • Confirm all icon images load (no red X, no white rectangles).
  • Verify links work (LinkedIn, Instagram, phone, address, website).