Blog

A selection of articles by the CloudMailin team relating to Email (deliverability, receiving and sending), Programming, Start-ups and Cloud Technologies.

Header Small Image Which SMTP port should I use in 2021?
SMTP Email Port 25 vs 465 vs 587 vs 2525?

Which SMTP port should I use for sending email?

Learn the difference between the main SMTP client and server ports (Port 25, 465, 587 and 2525), which one you should choose, what Start TLS is, and why you shouldn't use port 25 to send email messages.
2021-10-15
CloudMailin Team
Header Small Image Receiving Email Attachments in AWS S3 is changing

HTTPS Links for S3 Attachments

CloudMailin allows you to receive email attachments directly to Cloud Storage such as AWS S3. Starting Oct 15 2021 these links will use HTTPS.
2021-10-01
CloudMailin Team
Header Small Image Using TypeScript with AWS Lambda and SAM

TypeScript and AWS Lambda?

In this article, we'll discuss how to get TypeScript working with AWS Lambda and AWS SAM in just a few easy steps.
2021-08-27
Steve Smith
Header Small Image What is AWS SAM? Building an HTTP API with Amazon Web Services Serverless Application Model and Lambda

Building an HTTP API with AWS SAM and Lambda

In this article, we cover what AWS SAM is, how to get started and how it helps deploy serverless applications and Lambda functions to Amazon Web Services. We'll use JavaScript here, but AWS supports a range of languages.
2021-08-12
Steve Smith
Header Small Image Sending and receiving email in Node.js and TypeScript in 2021 with CloudMailin

Sending and Receiving email in Node.js

In this article, we'll cover a couple of ways to send email in Node.js and TypeScript. Following this we'll outline a quick and easy way to receive email with CloudMailin.
2021-03-12
CloudMailin Team
Header Small Image Receiving email attachments with Google Cloud Storage

Email attachments with Google Cloud Storage

CloudMailin can parse the attachments from email and send the email attachment to Google Cloud Storage automatically.
2020-12-29
CloudMailin Team
Header Small Image Using Basic Authentication with AWS API Gateway and Lambda

Basic Auth with AWS API Gateway & Lambda

Basic authentication is one of the oldest and simplest ways to authenticate HTTP Traffic. Although it has been superseded by a range of different options it's still one of the easiest and most convenient methods, as long as you're using HTTPS.
2020-11-03
CloudMailin Team
Header Small Image Receiving email attachments with Azure blob storage

Email attachments with Azure

CloudMailin allows you to receive emails via an HTTP POST, essentially sending email to a webhook.
2020-07-10
CloudMailin Team
Header Small Image Upgrading the TLS minumum version to TLSv1.2

Email encryption upgrade

Security has always been a priority for us at CloudMailin. As an email service provider it's often necessary for us to balance customer requirements and usability and where possible we always give our users a choice. For a while now we've supported both TLS 1.2 and TLS 1.3 on our platform, but we've also allowed connections from servers using TLS versions lower than this if the customer requests it.
2020-07-01
CloudMailin Team
Header Small Image Deprecating our original format

Deprecating the original format

When we first started over 10 years ago our original HTTP Webhook format was our only option. The original HTTP Format was a multipart/form-data format that was opinionated, it made a lot of decisions about how you might use it.
2020-05-21
CloudMailin Team
Header Small Image What is DMARC?

What is DMARC?

In an earlier article, we covered what DKIM and SPF can do for a domain. DMARC is the extension that brings it all together. DMARC stands for "Domain-based Message Authentication, Reporting & Conformance".
2020-05-20
CloudMailin Team
Header Small Image What are DKIM and SPF and how do we use them?

What are DKIM and SPF?

Sender Policy Framework (SPF) and DomainKeys Identifier Mail (DKIM) are both methods of identifying email senders.
2020-05-04
CloudMailin Team
Header Small Image Understanding Email Reputation

Understanding Email Reputation

Email sender reputation is crucial when sending an email. Since the early 1990s people have been sending Unsolicited Bulk Email or SPAM and it's critical you understand how to check and manage your reputation.
2020-04-17
CloudMailin Team
Header Small Image Automatically uploading email attachments to Amazon S3

Email attachments with AWS S3

For a while now CloudMailin has allowed you to send your attachments to S3. We call this feature attachment stores, but what exactly does this mean?
2020-03-01
CloudMailin Team