Sparrow has been discontinued. Similar apps include Thunderbird, which is free and open source. Other options are K-9 Mail, Microsoft Outlook, Spark Mail and Apple Mail. Email Clients like Sparrow are a crowded field, with more than 25 alternatives for Mac, Windows, iPhone, Linux and Android.
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
The Bat! is a secure email client software, built to protect your correspondence against third-parties.
Moldova
KMail is the email component of Kontact, the integrated personal information manager of KDE. Kontact is a personal information manager and groupware software suite for KDE. It supports calendars, contacts, notes, to-do lists, news, and email.
Germany
EU
Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA).
Japan
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.
Mail is designed to let you manage your email quickly and effortlessly. Its interface is based on conversations, so you can read an entire discussion without having to click from message to message.
United States
The most powerful platform for email productivity in a beautiful native app — on desktop and mobile.
United States
myMail is the smart email app for managing all your accounts on iOS and Android.
Russia
Unibox is a people centric email client that organizes your messages by person. It avoids having email like a to-do list.
GermanyEU
Scribe is a small portable email client with an intergrated contact database and calendar. It supports all the major internet mail protocols and uses international standards where possible. Scribe doesn't required installing or uninstalled and can be used from a removable...
FREE e-mail account with IMAP, spam and virus protection with UNLIMITED storage (GMail max. 15 GB). Because of this AOL WebMail is ideal as E-mail archive or E-Mail-Backup utility for other Mail accounts.
United States
An enterprise application server that integrates information into a single workspace, integrates also a full mail server
India
