Cloudflare Worker Email Server

Send free transactional emails from your Cloudflare Workers using MailChannels.

Getting Started!

Clone this repository
Install the dependencies with npm install
Add a random TOKEN to the wrangler.toml file (this will be used to authenticate your requests)
Deploy the worker with npm run deploy

Or deploy directly to cloudflare

Setup SPF

SPF is a DNS record that helps prevent email spoofing. You will need to add an SPF record to your domain to allow MailChannels to send emails on your behalf.

Add a TXT record to your domain with the following values: - Name: @ - Value: v=spf1 a mx include:relay.mailchannels.net ~all

Usage

Once you have deployed this worker function to Cloudflare Workers, you can send emails by making a POST request to the worker on the /api/email endpoint with the following parameters:

Note you need to pass an Authorization header with the TOKEN you set in the wrangler.toml file. Like the following: Authorization: TOKEN

Basic Email

The Most basic request would look like this:

{
	"to": "john@example.com",
	"from": "me@example.com",
	"subject": "Hello World",
	"text": "Hello World"
}

HTML Emails

You can also send HTML emails by adding an html parameter to the request. This can be used in conjunction with the text parameter to send a multi-part email.

{
	"to": "john@example.com",
	"from": "me@example.com",
	"subject": "Hello World",
	"html": "<h1>Hello World</h1>"
}

Sender and Recipient Name

You can also specify a sender and recipient name by adding a name parameter to the request. This can be used in conjunction with the to and from parameters.

{
	"to": { "email": "john@example.com",  "name": "John Doe" },
	"from": { "email": "me@example.com", "name": "Jane Doe" },
	"subject": "Hello World",
	"text": "Hello World"
}

Sending to Multiple Recipients

You may also send to multiple recipients by passing an array of eamils, or an array of objects with email and name properties.

{
	"to": [
		"john@example.com",
		"rose@example.com"
 	],
	"from": "me@example.com",
	"subject": "Hello World",
	"text": "Hello World"
}

{
	"to": [
		{ "email": "john@example.com", "name": "John Doe" },
		{ "email": "rose@example.com", "name": "Rose Doe" }
 	],
	"from": "me@example.com",
	"subject": "Hello World",
	"text": "Hello World"
}

Sending BCC and CC

You can also send BCC and CC emails by passing an array of eamils, an object with email and name properties, or an array of either, similar to the to parameter.

{
	"to": "john@example.com",
	"from": "me@example.com",
	"subject": "Hello World",
	"text": "Hello World",
	"cc": [
		"jim@example.com",
		"rose@example.com"
	],
	"bcc": [
		"gil@example.com"
	]
}

Reply To

You can also specify a reply to email address by adding a replyTo parameter to the request. Again, you can use an email string, an object with email and name properties, or an array of either.

{
	"to": "john@example.com",
	"from": "me@example.com",
	"replyTo": "support@example.com",
	"subject": "Hello World",
	"text": "Hello World"
}

DobroslavR/cloudflare-email