Spike is described as 'Transform your inbox into a collaborative workspace with integrated chat-like emails, cross-platform compatibility, and robust task management features' and is a Email Client in the office & productivity category. There are more than 50 alternatives to Spike for a variety of platforms, including iPhone, Windows, Android, Mac and Web-based apps. The best Spike alternative is Microsoft Outlook. It's not free, so if you're looking for a free alternative, you could try Delta Chat or Zulip. Other great apps like Spike are Spark Mail, Zoho Mail, eM Client and Mailspring.
Streamline your email experience by managing multiple accounts, integrating apps like Slack and Google Calendar, and using AI-driven features like drafting and spam prevention. Customize your workspace with themes, notifications, and tools for improved productivity and a modern interface.
Streamline emails, calendars, contacts, and task management with a smart inbox prioritizing critical messages. Includes calendar scheduling, third-party app integration like Facebook, Dropbox, and Trello, and support for Microsoft Exchange, Outlook.com, and Gmail, ensuring efficient task and email handling.
It has no chat-styled interface
Provides a chat experience over email, with all messages and contacts stored on user devices, open source code, group media support, and compatibility with any provider. No central servers, no tracking, works without SIM, and can be used by anyone just via email.
The best FOSS alternative to any other chat-styled email clients. I've been hooked ever since I downloaded this application!
Threaded group conversations combine live and asynchronous messaging, separating topics for organized collaboration, supporting open-source, cloud, and self-hosted deployments, secure communication with encryption, and multi-platform access for diverse teams.
Different to normal mail, but certainly not bubbled and chat-styled like Spike. DeltaChat is the best alternative
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.
Zoho Mail is a secure, encrypted, and enterprise-ready email solution, a suite of apps tailor-made for your organization's needs.
eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts, notes and chat.
eM Client is an excellent traditional email client. I use it to stay on top of my emails. It doesn't have a "chat" interface like DeltaChat, Spike, Unibox, or Mailspring, but it's interface is very good.
Boost your productivity and send better email with Mailspring, a beautiful, fast email client for Mac, Windows, and Linux. Mailspring is free to use and an optional pro version adds read receipts, send later, reminders and more.
Mailspring has (arguably) an interface that looks enough like a "chat" client that it could work for you, if you're not satisfied with DeltaChat, Spike or Unibox
E-mail inbox, online office, cloud storage, and video conferencing. Business or personal plans. From 1 € /month (1.10 USD).
Access, view and manage messages from all your email accounts in one place. Categorize your messages into easy to browse categories. Catch up on email easily with Apple Intelligence powered Priority Messages and summarizations.
Email and news client on GTK+ foundation featuring quick performance, extensible plugins, secure protocols, advanced filtering, strong folder and contact management, lightweight design, powerful search, customizable interface, multi-language support, and encryption.
A secure, cross-platform email client with a unified inbox, built-in PGP encryption, and optional AI. Use powerful AI when you want it or turn it off completely. Your email, your control.
Vivaldi Mail is a free email service with no ads and no strings attached developed by Vivaldi Technologies. It also offers contacts and calendar features, search capabilities, folders management, WEB/POP/IMAP access, 10GB of storage capacity, 20 MB of maximum attachment size...
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Traditional email client; not a chat email client like Spike, Unibox, DeltaChat