Spark for Teams Alternatives (September 2025)

Mailbutler is the email software extension plugin for Apple Mail, Gmail, and Outlook that helps you stay productive and professional.

Supercharge your productivity with AI writing, search, scheduling, and more

Canary learns how you email. It can write your emails, surface what needs attention, silence spam, and much more. Say hello to your Inbox Copilot.

Newton supercharges your email with powerful features like Read Receipts, Send Later, Snooze & more. Works with Gmail, Google Apps, Exchange, Outlook, Office365, iCloud, Yahoo & IMAP.

Mailspring: The open-source, extensible email app for Mac, Linux, and Windows with open tracking, link click tracking, contacts enrichment data and more.

Shared inbox for a transparent workspace—Zoho TeamInbox lets you manage team emails efficiently, gives you clutter free inboxes and helps attain Inbox Zero easily.

Discover your new all-purpose inbox. Write emails, create notes, set reminders and assign to-dos—your everyday tools, in Twobird.

Clean and organize your messy mailbox with a bulk email cleaner app - Clean Email. Choose your email provider to start cleaning.

Postbox is the power email app for busy professionals, like you.

Mailman is an email assistant that helps you get your inbox to zero. It acts as a tool for time management and productivity by shielding you from unimportant emails.

Cut your team's email management time in half & get started on the road to a cleaner inbox and more productive day with SaneBox. Start your free trial now!

MailMaestro is an AI-powered email assistant for Outlook & Gmail that helps you stay on top of your email and ensure the quality of every message you send. Try it for free now!

Inbox Zero is your AI personal assistant for email and the quickest way to reach inbox zero. Automate your email, bulk unsubscribe from newsletters, block cold emails, and view your email analytics. Open-source.

InMoat puts you back in control of your inbox. Tailor your inbox with readymade email filters, designed by experts, and let your inbox work for you. Win back time, maintain focus, and be more productive.

Fast email client with full Gmail, Hotmail and other services synchronization. Best replacement for MS Outlook or Thunderbird. Free version for Home users.

The fastest email experience ever made. Blazingly fast, delightful, and stress free. Get 4 hours back every single week.

The smarter, faster way to clean out your inbox. Remove hundreds (or even thousands) of messages from your inbox all at once. You'll be amazed at how fast you can approach Inbox Zero!

Email made easy and beautiful. Manage multiple accounts with the best email client for Windows 2024. Download the #1 email client program free Now.

Gmail, Outlook, and Apple got complacent and took their eye off the ball. Then along came HEY.

BlueMail is a modern, mobile and desktop, powerful Email management tool with a sleek design, unified inbox and support for all your accounts: IMAP, Exchange,POP3.

Fast, private email hosting for you or your business. More productive, lightning fast, simple and built to save you time.

Snoooz can send personalized Out of Office messages, automate OOO tasks, loop in backups, create coverage plans, and so much more. Start for free today.

Batch your emails into manageable daily, weekly, or monthly digests.

Mailtrim provides secure Free email client software with its unique team collaboration Feature and is designed to serve the mailing needs of all business

Lavender helps thousands of sellers around the world write better emails faster and get more positive replies in less time.

Create, access and manage mail from all your emails accounts in one place. Add images, scan documents, create sketches and attach files using the handy Format B…

Secure Windows or Linux mail server that includes chat, calendaring and contacts and offers a cost-effective alternative to Microsoft Exchange.

Thunderbird is a free email application that’s easy to set up and customize - and it’s loaded with great features!

TypeApp - The best Android and iOS email app ever created for mobile devices. Fast, simple and easy, TypeApp is the best email app for Android and iOS

Boomerang adds integrated meeting scheduling and email productivity tools to your Gmail and Google Workspace accounts, helping you focus on what matters.

Put some Genius into Gmail! Gmelius is the leading process automation and email collaboration software built for Gmail and Google Workspace. Start for free.

Exchange business-class email helps increase user productivity while protecting your data. Get it as a hosted service or run it on your servers.

Emails, calendars, contacts, tasks, chat and more

Polymail is the best email platform designed to make the work-life of any professional much easier. Offering tools and features that benefit you. Visit us now!

Sortd is an All-in-one Sales, Service and Task tracking app ‍for Gmail-based Teams. Manage your emails, customers, tasks and workflows, in your Inbox.

With ActiveInbox, you'll take control of Gmail by turning emails into tasks, putting them into folders, adding notes and achieving inbox zero.

Custom ChatGPT for your Email and Website

Email Meter is an email analytics tool for Gmail, Google Workspace and Microsoft 365 that gives teams and companies visibility into their email communications.

Cleanfox is the fastest Email Cleaner for Gmail, Outlook, and More. Clean your inbox efficiently and stop spam emails.

More than 250,000 professionals use Right Inbox every day to increase their email productivity. 12 powerful features to supercharge your Gmail account.

Accurate email tracking, automated followups, prospecting, mail merge, meeting coordination, sendlater, snooze, undo, and snippets for Gmail.

Streamline your emailing and boost your sales with Mailjet. We serve all your email and SMS needs with one simple and powerful service.

Create, edit, and track your sales activities from your inbox. Stay focused on your goals with customer and prospect data where you work.

Take back control of your email with this easy-to-deploy mail server in a box.

Ad-free Business Email Hosting with a clean, easy-to-use interface. Integrated Business Calendar, Contacts, Notes, Tasks. Free for up to 5 users.

Dossier is an app for organizing customer conversations, no matter where it happens, with zero disruption to the ways you already communicate. Based in San Francisco, Dossier is helping business owners, business professionals and teams around the globe intelligently sync their customer communication channels and organize documents, tasks and more. Welcome to a new way to build better customer relationships and a better business.

Build sales outreach cadences with email, phone, and social in as little as 5 minutes with Mailshake's sales engagement & automation software.

OX Cloud Email - Easy, Fast, Secure - Powerful email built for business

EssentialPIM helps you manage your life with powerful tools for email, calendar, contacts, notes, password entries and tasks.

Clay is a beautiful rolodex and CRM for iPhone, Mac, Windows, and web, built automatically to help you manage your personal and professional relationships.

Securely archive, search, and analyze your company's email on one platform, preserving vital data while gaining instant business insights.

Warmbase email warmup tool raises your sender reputation by positively interacting with your email. Connect your email account within 2 min.

Unlock the power of Blocks - the ultimate AI-powered no-code email builder. Craft visually appealing emails without any coding skills. Try it today!

EverDesk combines the best features of an Email Client, File Manager, Address Book and Calendar into one integrated interface, making it the most unique and comprehensive personal information manager on the market

Email warming software. Improve email sender reputation by having AI-generated sales conversations in your inbox allowing you to bypass spam algorithms. Land in your prospects' inboxes, not in spam, and sell more.

Unlock your productivity superpower with a multilingual AI Keyboard, supercharged AI Chat, Smart Notes, and state-of-the-art Transcription.

Forget searching through junk, spam, and unsolicited emails to find what you actually need. Bulletproof turns your open-access inbox into a permission-based one.

GMass allows you to easily schedule emails, send out mass emails and mail merge campaigns and more with Gmail! Click here to learn about more features!

Elevate your Gmail & Google Workspace with Kiwi for Gmail. Quickly access Docs, Sheets, Slides and Drive apps with one powerful desktop office suite - Now on both Mac and Windows! Get started now.

File and Find Outlook Emails with eFiler. Predictive email filing and instant indexed search results directly from Outlook

Sign in to your Outlook.com, Hotmail.com, MSN.com or Live.com account. Download the free desktop and mobile app to connect all your email accounts, including Gmail, Yahoo, and iCloud, in one place.

Tired of inefficient cold outreach tools? Discover a game-changing solution that guarantees superior deliverability, limitless email integrations, and AI-powered personalization.

Let Evercontact connect the dots in your life by turning your emails into an always-updated address book!

MaxBulk Mailer is a bulk email software and email marketing tool for macOS and Windows that allows you to send out customized press releases, price lists or any kind of text or HTML messages to your customers.

Achieve unmatched growth with Success.ai. Dive into 700M+ B2B leads, and benefit from unlimited emails, automated warmups, and AI-powered writing. Transform your outreach - Start free for 14 days!🚀

Salesforce Email Integration for 1&1, GoDaddy, Rackspace, Intermedia, iCloud, Zimbra, and IMAP. Sync emails to Salesforce on any email system & device.

Email deliverability software guaranteed to boost email placement. InboxAlly’s real-time tracking and email warmup ensure your messages hit the inbox, not spam.

Simple group email discussion lists for your club, association, office, society, family and more. Get started in minutes. 14-day free trial.

ChatGPT for your entire knowledge base. Write faster and smarter to save up to 3 hours every day.

Our note taking app helps you capture and prioritize ideas, projects and to-do lists, so nothing falls through the cracks. Start your free trial today!

The best email deliverability tool to raise your reputation and stop landing in spam. Reach the inbox and get better email results with MailReach.

Emailee is the best Email signature software. Get a branded email signature that promotes your brand and saves you time. Tool 100% FREE

Real Focus in Real-Time. Measure and improve your focus day by day, on iPhone, iPad and macOS.

K-9 Mail is an open source email client focused on making it easy to chew through large volumes of email

Integrate in minutes and send transactional emails via our REST API or SMTP. Scale with our reliable global infrastructure and deliver emails to your customer's inbox instantly.

Making the art of writing accessible to all

HCL Verse is the best instant messaging app and enterprise email management software for web-based mail clients powered by messenger software to provide an instant and secure messaging application.

YouMail for iPhone and Android devices. Spam call protection, smarter visual voicemail, virtual assistants, and virtual numbers.

Zoho Workplace is a productivity and collaboration suite trusted by millions. It brings mail, chat, files, office suite, meetings, and more into one place.

Use AI to create highly personalised cold emails or Linkedin messages that convert readers to customers. No experience needed. Find leads, create tailored personalised copy and make sales. AI Cold Emails

Loop Email unlocks teamwork right inside your email inbox. It's an all-in-one shared inbox that transforms email into your team’s superpower.

Flock, the best team communication app and online collaboration platform, comes with team messaging, project management and other great features that improve productivity and boost speed of execution.

A simple to do list app to manage your personal tasks, family projects, and team's work. Trusted by +40m people to stay organized and get more done.

You'll never look at email the same way again. Eight years ago, we first reimagined email. Now, we've done it again. Request early access today.

Zimbra: A Cloud-Hosted Collaboration Software and Email Platform That Integrates With Proprietary Business Solutions

Software that helps the most successful government affairs & public relations teams better educate, engage and empower their networks to act.

RainLoop Webmail - Simple, modern & fast web-based email client.

Take the pain out of writing blog articles, books, essays and more with Copylime's Smart AI • Copylime, your Smart AI Writer

Parcel streamlines your development workflow to help you rapidly code high-quality emails. Get started for free!

Scale your email outreach via unlimited sending accounts, warm up and built in personalization powered by AI to drive reply rate

Spark ideas, design logos, write captivating content with AI Magicx. AI-powered tools for creators & entrepreneurs. Try FREE!

Your personal AI writing assistant for content generation, research, speeches, rewriting, and more. HyperWrite ensures the highest quality writing while helping you get more done. HyperWrite uses the world's most powerful artificial intelligence technology to help you work smarter, faster, and with ease. Hundreds of AI tools to transform your writing, communication, and research. Try our AI writer and new AI Personal Assistant to experience how AI can transform your work.

Kerlig™ for macOS brings AI to any app. It's your in-context AI writing assistant

Enhance relationship growth with our email tracker for Gmail. Track emails, receive read receipts, and gain valuable insights for effective communication.

Get the best membership software on the planet. Designed and built BY business owners FOR business owners with a track record of success!

Think more write less

Free Email Tracking Trial lets you track email, recall email and modify sent email. You get Free, unlimited Read Receipts and Confirmations when email gets read. Find out When, Where for How Long recipients read your sent emails

Clean Inbox for Gmail™ | A Gmail addon with GPT powered filters to avoid unwanted email, spam and marketing email.

Mail Manager is an email management add-in for Outlook designed to help project and client-based businesses get control of their email. Find out more.