The Mailbird Blog

Major email providers implemented sweeping IMAP rate-limiting changes in 2025, causing widespread sync failures and authentication errors. This guide explains why your email client suddenly stopped working and provides actionable solutions to regain reliable access when providers enforce restrictive policies without warning.

Gmail users worldwide are experiencing authentication failures as Google transitions from password-based login to OAuth 2.0 tokens for third-party email clients. This guide explains why email clients like Outlook and Thunderbird stopped working and provides practical solutions to restore secure access.

Apple Mail users face mounting security challenges in 2025, with nine zero-day exploits requiring emergency patches. The latest December update addresses critical WebKit vulnerabilities linked to sophisticated surveillance campaigns. These ongoing security concerns, combined with persistent functionality issues, raise questions about Apple Mail's reliability for professional use.

Critical zero-day vulnerabilities in widely-used email libraries expose millions to security risks, with maximum-severity flaws allowing attackers to bypass authentication mechanisms like SPF, DKIM, and DMARC. This guide explains how these vulnerabilities affect popular email clients and provides essential steps to protect yourself immediately.

iPhone users across all models are experiencing severe battery drain after iOS updates, with the Mail app consuming up to 51% of daily battery power even when not in use. This guide reveals the causes behind this widespread epidemic and provides immediate solutions to restore your device's battery life.

Microsoft's transition from traditional COM add-ins to web-based add-ins is disrupting workflows for thousands of Outlook users. This guide examines the technical changes, real-world impacts on professionals and developers, and practical solutions for maintaining email productivity during this controversial platform transformation.

Email throttling by Internet Service Providers can significantly delay message delivery, affecting business communications and time-sensitive information. This guide explains why ISPs implement rate limiting, how throttling varies by geographic region, and provides practical solutions to maintain reliable email delivery despite infrastructure challenges.

Federal email retention requirements are rapidly expanding beyond traditional email to include chat messages, texts, and electronic messaging platforms. Organizations face complex compliance challenges navigating conflicting federal mandates, international privacy laws, and state regulations while implementing sophisticated archiving infrastructure to avoid substantial penalties.

Mac users face frustrating email client limitations due to Apple's App Sandbox security restrictions, which have tightened since 2022. This guide explains why third-party email apps behave differently than expected, how sandbox architecture affects message retention and file access, and provides solutions to maintain productivity while navigating these macOS security constraints.

Email authentication failures have surged in 2024-2025, causing widespread delivery issues, bounced messages, and spam folder problems. This comprehensive guide explains the technical causes behind these disruptions, decodes new requirements from major providers like Gmail and Yahoo, and provides practical solutions to protect your email communications.