Apps similar to SlideMail include Thunderbird, which is free and open source. Other options are K-9 Mail, Microsoft Outlook, FairEmail and Evolution. Email Clients like SlideMail are a crowded field, with more than 25 alternatives for Windows, Mac, Android, iPhone and iPad.
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.
United States
No-frills, easy to use, easy to maintain Email client for Android based on the JSON Meta Application Protocol (JMAP).
Germany
EU
The Bat! is a secure email client software, built to protect your correspondence against third-parties.
Moldova
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.
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.
United States
myMail is the smart email app for managing all your accounts on iOS and Android.
Russia
United States
Unibox is a people centric email client that organizes your messages by person. It avoids having email like a to-do list.
GermanyEU
Columba is an email client written in Java, featuring a user-friendly graphical interface with wizards and internalionalization support. Its a powerful mail management tool with features to enhance your productivity and communication.
The most powerful platform for email productivity in a beautiful native app — on desktop and mobile.
United States
AquaMail is an email app for Internet and Exchange mail, for Android 4.0.3 and higher.
BulgariaEU
Experience seamless communication with Xylo AI email assistant, the ultimate tool powered by cutting-edge Generative AI and Social Psychology.
