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mailisk


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Mailisk Node Client

Mailisk is an end-to-end email testing platform. It allows you to receive emails with code and automate email tests.

  • Get a unique subdomain and unlimited email addresses for free.
  • Easily automate E2E password reset and account verification by catching emails.
  • Virtual SMTP support to test outbound email without 3rd party clients.

Get started

For a more step-by-step walkthrough see the NodeJS Guide.

Installation

Install with npm
npm install --save-dev mailisk
Install with Yarn
yarn add mailisk --dev

Usage

After installing the library import it and set the API Key

const { MailiskClient } = require("mailisk");

// create client
const mailisk = new MailiskClient({ apiKey: "YOUR_API_KEY" });

// send email (using virtual SMTP)
await client.sendVirtualEmail(namespace, {
  from: "test@example.com",
  to: `john@${namespace}.mailisk.net`,
  subject: "Testing",
  text: "This is a test.",
});

// receive email
const result = await client.searchInbox(namespace);

console.log(result);

API Reference

This library wraps the REST API endpoints. Find out more in the API Reference.

Client functions

searchInbox(namespace, params?)

The searchInbox function takes a namespace and call parameters.

  • By default it uses the wait flag. This means the call won't return until at least one email is received. Disabling this flag via wait: false can cause it to return an empty response immediately.
  • The request timeout is adjustable by passing timeout in the request options. By default it uses a timeout of 5 minutes.
  • By default from_timestamp is set to current timestamp - 5 seconds. This ensures that only new emails are returned. Without this, older emails would also be returned, potentially disrupting you if you were waiting for a specific email. This can be overriden by passing the from_timestamp parameter (from_timestmap: 0 will disable filtering by email age).
// timeout of 5 minutes
await mailisk.searchInbox(namespace);
// timeout of 1 minute
await mailisk.searchInbox(namespace, {}, { timeout: 1000 * 60 });
// returns immediately, even if the result would be empty
await mailisk.searchInbox(namespace, { wait: false });
Filter by destination address

A common use case is filtering the returned emails by the destination address, this is done using the to_addr_prefix parameter.

const { data: emails } = await mailisk.searchInbox(namespace, {
  to_addr_prefix: "john@mynamespace.mailisk.net",
});

For more parameter options see the endpoint reference.

sendVirtualEmail(namespace, params)

Send an email using Virtual SMTP. This will fetch the SMTP settings for the selected namespace and send an email. These emails can only be sent to an address that ends in @{namespace}.mailisk.net.

const namespace = "mynamespace";

await mailisk.sendVirtualEmail(namespace, {
  from: "test@example.com",
  to: `john@${namespace}.mailisk.net`,
  subject: "This is a test",
  text: "Testing",
});

This does not call an API endpoint but rather uses nodemailer to send an email using SMTP.

listNamespaces()

List all namespaces associated with the current API Key.

const namespacesResponse = await mailisk.listNamespaces();

// will be ['namespace1', 'namespace2']
const namespaces = namespacesResponse.map((nr) => nr.namespace);

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FAQs

Last updated on 03 Dec 2023

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