Spark Mail is described as 'E-mail app with all the great features: swipes (long/short), snooze, add (multiple) attachments from the cloud, support for various e-mail services and more' and is a very popular Email Client in the office & productivity category. There are more than 50 alternatives to Spark Mail for a variety of platforms, including Mac, Windows, Android, iPhone and iPad apps. The best Spark Mail alternative is Thunderbird, which is both free and Open Source. Other great apps like Spark Mail are K-9 Mail, FairEmail, Evolution and Mailspring.
BlueMail is a modern, mobile first, powerful Email management tool with a sleek design, unified inbox and support for all your accounts: IMAP,Exchange,POP3.
Most users think BlueMail is a great Spark Mail alternative.
Transform your email inbox into a collaborative workspace with Spike. Enjoy integrated chat-like emails, tasks, collaborative notes, and group projects. Seamlessly manage multiple accounts, organize priorities, and schedule meetings across devices.
Engineered for iOS, macOS, and watchOS, this fast mail client supports multiple account types, custom actions, Smart Inbox filtering, unified inbox, privacy mode, email scheduling, snooze, third-party app integration, flexible personalization, and advanced workflow tools.
Shortwave is an email app that takes the pain out of managing your inbox, making it effortless to stay organized, productive, and responsive.
Mimestream combines your favorite Gmail features with the power of a native macOS app so you can move through your email effortlessly.
TypeApp is an all-free, beautifully designed, universal email app, capable of managing unlimited number of mail accounts from various providers, allowing for smart push notifications while enabling personalization across multiple email accounts.
Very similar to Spark on Android and even less problems on multiple accounts as BlueMail
Collaborative email and threaded group chat for productive teams. A single app for all your internal and external communication.
Talanoa is the first inbox designed around people. Cut the noise, focus only on what matters.
Wino is a lightweight native mail client for Windows 10/11. It is still in active development. Main motivation for this project is to replace Mail & Calendar for Windows with modern Windows design without using web technologies for speed.
Productivity-centered email application streamlines inbox management, uses AI for drafting responses, automates snippets, summarizes conversations, enables timely sends, integrates calendar and CRM, and includes collaborative features like live views and comments.
The Bat! is a secure email client software, built to protect your correspondence against third-parties.
Mac IMAP email client featuring keyboard control, Markdown email composition, advanced search capabilities, smart mailboxes, automatic signature handling, cryptographic options with OpenPGP/S-MIME, tagging, multiple notifications, and customizable layouts including widescreen.
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BlueMail is built as an entire Chrome browser instance, using a separate OS process for every message window, making it massively heavy on CPU and memory usage. Normally I had to wait more than a minute for each message to display. It was always at least half an hour late to notify new messages. A software development team with even minimal skills would never build an app so poorly. The design is crippled from top to bottom. I recommend avoiding BlueMail as if it were malware.