Inline Images in Email with Base64

🧩 Problem

Email templates need inline images; hosted URLs get blocked or expire. When malformed or unstructured data hits routers, filters, or API connectors, entire automations halt or silently drop records. Teams end up retrying runs, hand-editing payloads, and explaining delays to customers.

💡 Why This Happens

Transactional email providers allow base64 but not remote downloads. Most automation platforms assume well-formed payloads and do minimal validation. AI models, third-party APIs, and changing vendor schemas drift over time, mixing encodings, formats, and unexpected fields that downstream steps cannot tolerate.

🚀 The Fix: Base64 Encode (API Endpoint)

Use this endpoint to solve the problem reliably inside Zapier, Make.com, n8n, Postmark, SendGrid.

Endpoint

POST https://api.postthatgetthis.com/base64/encode

Example Input

{ "url": "https://example.com/logo.png" }

Example Output

{ "data": "iVBORw0KGgoAAA..." }

📦 What This Solves

• Inline-safe images
• No remote fetch needed
• Great for transactional emails

Not seeing your exact problem? Tell us what’s breaking in your workflow and we’ll help fix it: Submit A Problem.

🔗 Related Use Cases

• Base64 Normalize
• Base64 to Image

👉 Try it now

Use this endpoint directly in your automation tool. POST → get cleaned, structured data. Every time.