January 2022 Summaries

CodeIgniter is presented as a PHP framework that streamlines web development through built-in libraries, including an Email library for sending messages. The walkthrough uses Docker and Bitnami’s CodeIgniter development container to create a local environment with PHP, MariaDB, and a web server, then explains the framework’s config, controller, and view structure. It configures a Mailer controller as the default route, builds a simple recipient form, and connects CodeIgniter’s email functionality to Mailtrap SMTP using domain-verification credentials. The tutorial then demonstrates sending and testing a basic email, enabling HTML message content, addressing multiple recipients, adding CC and BCC fields, and attaching files hosted locally or at external URLs. It concludes that Docker can simplify environment setup while CodeIgniter and Mailtrap provide a relatively accessible path for building email functionality.

Mailtrap has introduced centralized User Management to simplify collaboration and permission control across inboxes, projects, and billing for its nearly 900,000 users. Account owners can now view all team members, invite or remove users, assign access to multiple projects or inboxes from one screen, and adjust permissions without navigating separate menus. The feature establishes owner, admin, and viewer roles, with owners retaining full account control, admins able to manage most settings but not delete the account or transfer ownership, and viewers limited to read-only access to projects, inboxes, and emails. Separate billing roles allow designated billing admins to manage subscriptions and payment methods or billing viewers to inspect invoices without accessing email-related resources. User Management is available on plans that support team members, beginning with the Team plan for up to 20 users.

Blockchain-based email aims to improve traditional email’s persistent security, authentication, and privacy weaknesses by using decentralized ledgers to verify senders, encrypt messages, and reduce reliance on providers that may scan or monetize user data. Early services such as CryptaMail, Mailchain, and LedgerMail use varying approaches, including on-chain message storage, off-chain storage with blockchain-based identity verification, and hybrid integration with Gmail or Outlook. However, widespread adoption faces major practical barriers: blockchain storage requirements are poorly suited to the size and volume of global email traffic, immutable records may expose metadata and prevent deletion, compatibility with standard SMTP email can undermine decentralization, and current networks lack the scalability and cost efficiency to process hundreds of billions of daily messages. As a result, hybrid systems that apply blockchain primarily for authentication or encryption may be more viable than fully blockchain-based email, while established encrypted email providers such as ProtonMail, Tutanota, and Mailfence already offer mature alternatives with end-to-end encryption and privacy-focused features.