Cloudinary Blog

Securely Uploading Images to Cloudinary by Email With Heroku and Sendgrid

Securely Uploading Images to Cloudinary by Email

Despite United States founder Benjamin Franklin’s wisdom that three can keep a secret if two of them are dead, you as developers often need contributions from third parties for your project. However, in today’s digital world, security in software development is a predominant concern. With respect to management of rich media, it’d be ideal if those folks could upload images or videos to your Cloudinary account without having to log in.

This post explains how to enable third parties, including project contributors and end-users, to do that by email with free, integrated tools, including SendGrid, Cloudinary’s email server. Actually, that basic function already exists in many electronic devices, from smartphones to smart fridges. Setting it up is a snap.

The Process Flow

First, you need an email server but with a twist. As mentioned, we at Cloudinary leverage the one from SendGrid, which accepts any email it receives and then parses it.

Here’s the process flow:

  1. A third party sends an email with an image attachment to the address you configured with your email provider.
  2. For each email, SendGrid creates a webhook and sends it to a Cloudinary app that’s deployed on Heroku.
  3. The app parses the webhook and uploads the image to Cloudinary as an unsigned upload.

The Prerequisites

Following are the requirements, starting with the final destination, Cloudinary:

Note: Some of the steps generate parameters for the next step. We’ll work on eliminating that complexity.

  • A Cloudinary account. A free one will do just fine. Log in to the dashboard and copy your Cloudinary URL from there for the next step.
  • A platform on which to host your code. Even though you will execute Python code on Heroku, any platform will do. The code repository is on GitHub. You deploy the code with just a button click with no manual efforts whatsoever.
  • An email-service provider. Cloudinary has picked Twilio’s SendGrid as the service provider for receiving and sending emails for uploads to Cloudinary’s Media Library, as described in this post. A free account will do just fine
  • A registered domain. You’ll need to create mail exchange (MX) records to point to the email-service provider.

The Procedure

Refer to the readme on GitHub, which explains how the Cloudinary app cloudinary-email-uploader works with SendGrid's incoming parser to empower third parties to send email along with images to your Cloudinary account. In addition, you’ll learn how to—

  • Acquire the prerequisite free software.

  • Configure and deploy cloudinary-email-uploader.

The complete code is also on GitHub.

Do give it a try and comment your results below.

Recent Blog Posts

Five Ways to Effectively Manage Online Media

The digital economy is driven by highly visual experiences. After all, viewers process images 60,000 times faster than text. Therefore, it’s no surprise that top-notch visual media has been an essential component of a captivating e-commerce experience for years. Nor is it surprising that visual media’s importance only rose during the COVID-19 pandemic, a reality for all retailers, including our client Levi’s.

Read more
Creating an API With Python Flask to Upload Files to Cloudinary

Code

Cloudinary offers SDKs for many programming languages and frameworks. Even though it also offers an Upload API endpoint for both back-end and front-end code, most developers find the SDKs very helpful. If you're working with a powerful back-end framework like Python Flask, you'll be happy to hear that a Python SDK is now available.
This tutorial walks you through the process of building an API to upload images to Cloudinary. You can also upload other file types, including video and even nonmedia files, with the API.

Read more
How to Use the Cloudinary Media Editor Widget

At Cloudinary, we manage the entire pipeline of media assets for thousands of customers of varying sizes from numerous verticals.

As part of our commitment to support the entire flow of media assets, we are now introducing an intuitive media editing widget: an out­-of­-the-­box, interactive UI providing your users with a set of common image editing actions for immediate use on your website or web app. The widget is interactive and simple, built on Cloudinary's transformation capabilities, and requiring only a few lines of code to integrate. Afterwards, you can seamlessly and effortlessly add content to your site or app with no need for in-house image editing capabilities.

Read more
Shoppable Video Is Becoming Popular in E-Commerce

As pandemic restrictions necessitated, many shopping trips in 2020 took place outside the traditional brick-and-mortar store, or at least void of the physical aisle-browsing experience. Same-day curbside pickup became a safe and convenient alternative, and e-commerce transactions skyrocketed as consumers shopped online. In fact, Digital Commerce 360 estimates that, compared to 2019, e-commerce transactions grew by more than 40% last year.

Read more
Enhance Your Travel Site With Cloudinary in Anticipation of a Return to New Normal

Read more