Software Alternatives, Accelerators & Startups

Nextcloud VS Mailwarm

Compare Nextcloud VS Mailwarm and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Nextcloud logo Nextcloud

With Nextcloud enterprises host their own secure cloud solution for storage, collaboration & communication from any device, anywhere.

Mailwarm logo Mailwarm

Email warmup tool to avoid spam folder, since 2020 - Backed by Email Deliverability Experts
  • Nextcloud Landing page
    Landing page //
    2023-07-23
  • Mailwarm best email warmup tool
    best email warmup tool //
    2026-02-04
  • Mailwarm best email warmup tool - spam score
    best email warmup tool - spam score //
    2026-02-04
  • Mailwarm See Why Teams Love Mailwarm
    See Why Teams Love Mailwarm //
    2026-02-12
  • Mailwarm Activity of email interactions
    Activity of email interactions //
    2026-02-12
  • Mailwarm live spam score monitoring
    live spam score monitoring //
    2026-02-12
  • Mailwarm Deliverability Analytics
    Deliverability Analytics //
    2026-02-12

Mailwarm is an automated email warmup and deliverability platform designed to help businesses keep their emails out of spam folders and consistently reach the inbox.

Since 2020, Mailwarm has helped founders, sales teams, marketers, and agencies improve email deliverability, build strong sender reputation, and scale cold email outreach safely. We focus on the real fundamentals of deliverability: trust, consistency, and genuine engagement.

Mailwarm automatically warms up new domains, inboxes, and SMTP servers by generating natural interactions between real email accounts. This process protects your reputation, prevents spam filtering, and improves inbox placement across major providers including Gmail, Outlook, Microsoft 365, and Yahoo.

Key Features: - Automated email warmup for Gmail, Outlook, and Microsoft 365 - Multi-provider warmup for realistic sender reputation building - Spam score tracking to measure inbox vs spam performance - Bounce prevention and verification systems - SMTP, domain, and mailbox warmup - Easy one-click Outlook & Office365 connection - Guided SMTP setup and deliverability monitoring - Stable warmup with auto-recovery from connection issues - Team and agency management with flexible plans

Email warmup is not a hack, itโ€™s a process. Mailwarm was built to do it properly, using real engagement signals to help your emails earn long-term trust with mailbox providers.

Whether youโ€™re launching new outreach campaigns, onboarding new sales reps, or managing multiple client accounts, Mailwarm helps you send emails with confidence and achieve better inbox placement instead of landing in spam.

Mailwarm is not just an email warmup tool. Every plan includes an email deliverability expert who works with you to set up your infrastructure, monitor your performance, and fix issues that impact your inbox placement. Most tools show you data. Mailwarm helps you improve results.

Nextcloud

$ Details
Platforms
-
Release Date
-
Startup details
Country
Germany

Mailwarm

$ Details
paid $69.0 / Monthly ("Up to 50 emails/day", "1 account (1 SMTP)", "Chat support")
Platforms
GMail Outlook SMTP Zoho Web Yahoo Mail
Release Date
2020 December
Startup details
Country
France
City
Rouen
Founder(s)
Gonzague Hacher, Amine Benjelloun, Thami Benjelloun, Othman Katim
Employees
10 - 19

Nextcloud features and specs

  • Open Source
    Nextcloud is open source, meaning the source code is available for anyone to inspect, modify, and enhance. This promotes transparency and community contributions.
  • Privacy and Control
    Users have complete control over their data since Nextcloud can be self-hosted. This mitigates privacy concerns associated with third-party cloud services.
  • Extensibility
    Nextcloud offers a wide range of apps and plugins that can extend its functionality, such as calendar, contacts, office, and media apps.
  • Collaboration Tools
    Nextcloud includes integrated solutions for file sharing, collaborative editing, and communication, which are useful for both personal and enterprise use.
  • Security Features
    Nextcloud provides robust security features like end-to-end encryption, two-factor authentication, and regular security updates.

Possible disadvantages of Nextcloud

  • Setup Complexity
    Setting up and maintaining a Nextcloud instance can be technically challenging, especially for users without a background in server management.
  • Performance Issues
    Depending on the hardware and configuration, Nextcloud might experience performance issues, particularly under heavy load or with extensive use of additional apps.
  • Resource Intensive
    Nextcloud can be resource-intensive in terms of CPU, memory, and storage, especially when additional features and apps are enabled.
  • Dependency Management
    Managing dependencies and ensuring compatibility with other installed software can be cumbersome, requiring regular updates and maintenance.
  • Limited Official Support
    While there is a strong community, official support can be limited or costly, which may be a disadvantage for enterprise environments requiring reliable assistance.

Mailwarm features and specs

  • Automated Email Warmup
    Mailwarm automatically warms up inboxes, domains, and SMTP servers by generating natural interactions between real email accounts to build and protect sender reputation.
  • Multi-Provider Warmup
    Supports warmup across Gmail, Outlook, Microsoft 365, Yahoo, and other providers to create realistic engagement signals and improve overall inbox placement.
  • Spam Score Monitoring
    Provides a weekly spam score that shows how often your emails land in your spam versus inbox, helping you track deliverability progress with real data.
  • Bounce Prevention & Verification
    Built-in verification systems detect and deactivate invalid inboxes automatically to prevent bounces, one of the most harmful signals for email deliverability.
  • One-Click Outlook & Office365 Setup
    Connect Microsoft 365 and Outlook accounts instantly through the official Microsoft sign-in process without complex SMTP configuration.
  • Simplified SMTP Configuration
    Pre-configured SMTP settings for major providers with step-by-step guidance make it easy to connect and start warming up in minutes.
  • Deliverability Analytics
    Detailed reports help users monitor warmup progress, engagement trends, and overall email performance to understand and improve sender reputation.
  • Engagement Simulation
    Mailwarm engages with emails by marking them as important, replying, and removing them from spam, mimicking the actions of a real recipient and thereby boosting sender reputation.

Possible disadvantages of Mailwarm

  • Cost
    Mailwarm is a premium service, which may be expensive for small businesses or individual users with limited budgets.
  • Dependency on Third-Party Tool
    Relying on an external service like Mailwarm means users don't have full control over the warming process, and there might be risks related to data privacy and service reliability.
  • Learning Curve
    Although the platform is designed to be user-friendly, new users might still face a learning curve in understanding and fully utilizing all features and analytics provided.
  • Limited Customization
    Some users may find that Mailwarmโ€™s automation features lack the level of customization required for highly specific or complex email strategies.
  • No Instant Results
    The warming process is gradual and can take several weeks to show significant improvements in deliverability, which might not meet the needs of users looking for immediate results.

Analysis of Mailwarm

Overall verdict

  • Mailwarm is generally considered useful for businesses and individuals looking to improve their email deliverability rates. While there are positive reviews about its effectiveness in enhancing email reputation and ensuring better deliverability, the effectiveness may vary depending on individual use cases and how well the service is integrated with existing email strategies. It is most beneficial for users who have experienced issues with emails going to spam or have recently started using new email addresses for their campaigns.

Why this product is good

  • Mailwarm is a service designed to help increase the deliverability of emails by gradually warming up email addresses, particularly those used in cold email campaigns. It automates the process by sending emails from your account to its network of participants and receiving replies, which helps to build a positive reputation for new email addresses with email service providers. This can lead to better inbox placement and reduce the chances of emails being marked as spam, especially important for businesses engaged in outreach and marketing via email.

Recommended for

  • Businesses engaged in regular cold email outreach.
  • Startups launching new email campaigns.
  • Marketers looking to improve email deliverability.
  • Individuals and companies experiencing low open rates due to spam issues.

Nextcloud videos

Here are 5 Reasons I โค๏ธ Nextcloud | TLG

More videos:

  • Review - Pros and Cons of NextCloud
  • Review - Nextcloud is AWESOME... but?

Mailwarm videos

No Mailwarm videos yet. You could help us improve this page by suggesting one.

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Category Popularity

0-100% (relative to Nextcloud and Mailwarm)
Cloud Storage
100 100%
0% 0
Email Marketing
0 0%
100% 100
File Sharing
100 100%
0% 0
Email Warm Up
0 0%
100% 100

Questions & Answers

As answered by people managing Nextcloud and Mailwarm.

What makes your product unique?

Mailwarm's answer:

Mailwarm is an email warmup and deliverability platform built by a Y Combinator and Station F startup.

Since 2020, weโ€™ve worked with many types of companies: SaaS startups, recruitment agencies, e-commerce brands, and sales teams; to help them improve inbox placement safely.

Mailwarm is unique because it offers: - Real multi-provider warmup (Gmail, Outlook, Microsoft 365, Yahoo)

  • Clear and real spam score tracking

  • Built-in bounce prevention

  • Easy setup and stable automation

Our focus is simple: help businesses keep emails out of spam and land in the inbox.

Why should a person choose your product over its competitors?

Mailwarm's answer:

Mailwarm delivers real, measurable results instead of risky shortcuts.

Users choose Mailwarm because it provides: - Automated email warmup that protects sender reputation

  • Multi-provider engagement for realistic signals

  • Spam score to track deliverability progress

  • One-click Outlook and Office365 connection

  • Reliable campaigns with auto-recovery

Itโ€™s an easy, transparent, and professional way to improve email deliverability.

How would you describe the primary audience of your product?

Mailwarm's answer:

Mailwarm is for anyone who depends on email outreach:

  • Sales teams sending cold emails

  • Founders and startups launching new domains

  • Marketing agencies

  • Recruiters and staffing firms

  • Growth and outbound teams

If inbox placement matters to your business, Mailwarm is built for you.

What's the story behind your product?

Mailwarm's answer:

Mailwarm started as a real problem we faced ourselves.

We were two founders working at Station F in Paris, the largest startup incubator in Europe, trying to sell our own products. Every time we launched outreach campaigns, our emails kept landing in spam.

To solve this, we built an internal email warmup system for our personal use. After deep research into email deliverability, we created a stronger, more reliable solution.

Other startups in the incubator quickly asked to use it too; so we turned it into a real product.

After launching publicly, Mailwarm became #1 Product of the Day on ProductHunt and was accepted into Y Combinator, the worldโ€™s most prestigious startup accelerator.

Since then, Mailwarm has grown into a trusted platform used by thousands of companies to improve inbox placement and email deliverability.

Which are the primary technologies used for building your product?

Mailwarm's answer:

Mailwarm is a secure cloud-based SaaS platform built on:

  • SMTP and IMAP email protocols

  • Advanced verification systems

  • Multi-provider infrastructure

  • Real-time analytics and monitoring

  • Reliable automation engines

These technologies ensure stable, continuous email warmup.

Who are some of the biggest customers of your product?

Mailwarm's answer:

As a Y Combinator and Station F startup, Mailwarm works with:

  • Tech startups and SaaS companies

  • Recruitment and staffing agencies

  • Real Estate Agencies

  • B2B marketing agencies

  • E-commerce brands

  • Sales and outbound teams

  • Freelancers and consultants

From France to global markets, hundreds of organizations trust Mailwarm to improve email deliverability and inbox placement.

User comments

Share your experience with using Nextcloud and Mailwarm. For example, how are they different and which one is better?
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Reviews

These are some of the external sources and on-site user reviews we've used to compare Nextcloud and Mailwarm

Nextcloud Reviews

Top 10 Best Enterprise Instant Messaging Software [2026]
Nextcloud Talk is one of the best self-hosted on-premises audio/video and chat communication services. It provides a cutting-edge on-premises content collaboration platform with real-time voice, video chat, and groupware on mobile, desktop, and the web.
Source: www.contus.com
12 Best Self-hosted Chat Platforms For Team Communication
Below is a curated list of the 12 best self-hosted messaging apps like MirrorFly, Mattermost, Zulio, Nextcloud, and Rocket.chat that offer unique collaboration features and lets you take full control of your data.
Best Cloud Storage Services for Linux
Another general tip is โ€“ if you can, self-host your data. Use Nextcloud and/or Cryptomator. You will have the most control over your data this way. Youโ€™ll also have the most features, tools, extensions, integrations, etc. with Nextcloud. You wonโ€™t be limited to some features based on the plan youโ€™re paying for. However, thereโ€™s a learning curve for this. Youโ€™ll need to know...
Source: linuxstans.com
20+ Picasa Alternatives And Best Similar Apps Like Picasa 2022
Nextcloud is far more than a photo hosting application and the best Picasa alternative, but its photo management stands out thanks to phone apps you can use for opt-in synchronization. Instead of sending your pictures to Google Photos or Apple cloud storage, you can send them to your Nextcloud install.
6 cPanel Alternatives
Nextcloud was forked from ownCloud in 2016. They share mostly the same native features and workflow. However, Nextcloud is more popular for a few notable reasons.

Mailwarm Reviews

  1. katewalker
    ยท Senior Digital Marketing Manager at Midland States Bank ยท
    Steady Improvement in Email Deliverability

    I decided to try Mailwarm after having consistent issues with my emails landing in spam folders. At the beginning, I wasnโ€™t fully sure what to expect, but the onboarding process was simple enough to get me started quickly. After running it for a while, I began to notice a steady improvement in my email deliverability. More of my messages started reaching the inbox instead of getting filtered out, which really helped with my outreach efforts. Overall, itโ€™s been a reliable experience. It may not be perfect, but it definitely does what itโ€™s supposed to do if you give it time.

    ๐Ÿ Competitors: Lemwarm by Lemlist
  2. John Fitzpatrick
    ยท CEO at Dublin's FM104 ยท
    Helped My Emails Finally Land in Inbox

    I started using Mailwarm because I was struggling with my emails going straight to spam, especially for outreach. At first, I wasnโ€™t expecting much, but after a couple of weeks, I actually started noticing a difference. The setup was pretty simple, and once everything was connected, it just kept running in the background without me needing to constantly check it. Thatโ€™s something I really appreciated.

    Overall, Iโ€™d say itโ€™s a reliable tool if youโ€™re serious about improving email deliverability without overcomplicating the process.

    ๐Ÿ Competitors: InboxAlly
  3. Josh
    ยท CTO at Ambas ยท
    A very good email warmup tool

    I have been using Mailwarm to warm up email accounts and improve overall deliverability for my outreach campaigns. The setup process was very simple and everything runs automatically without requiring constant monitoring. Since using the tool, Iโ€™ve seen a clear improvement in inbox placement and fewer emails landing in spam. Itโ€™s a reliable and effective solution for anyone doing cold email or managing multiple inboxes.

    ๐Ÿ Competitors: Warmy.io
    ๐Ÿ‘ Pros:    Very easy and quick to set up|Fully automated email warmup process|Various email providers warmup|Simple, clean dashboard|Very professional and helpful support team

Mailwarm vs Mailreach vs Lemwarm: Which One Fits Your Needs in 2026?
To achieve consistent inbox placement in 2026, choosing the right warm-up tool is crucial. Each solution approaches email warm-up differently. Mailwarm emphasizes large-scale, authentic mailbox interactions. Mailreach is another warm-up tool operating in the same category as Mailwarm, providing similar solutions in automated mailbox interactions for sender reputation...
Top 14 Email Warm-Up Tools for B2B SaaS
Mailwarm: Mailwarm features a maintained network of 2,000+ active mailboxes. It automates opens, replies, spam removal, and marks emails as primary to steadily build sender reputation. The tool focuses on technical deliverability and gradual, natural warm-up.
Top 5 Email Warmup Tools in 2026
Mailwarm is dedicated to building sender reputation rather than marketing automation. Through a network of over 2,000 actively maintained mailboxes, it orchestrates gradual interactions, such as opens, replies, spam recovery, and tagging emails as primary, that help establish a positive sending history. Mailwarm supports all major providers and custom IMAP/SMTP settings and...
23 Best Cold Email WarmUp Tools in 2022 (Free + Paid)
You can visit Mailwarmโ€™s official website and choose the plan which suits you the best for your warm up since it has really great deals, the only drawback is their no free trial which makes it hard to choose this but people do choose because of great deals and features provided by Mailwarm.
Source: inguide.in
Top 10 of the Best Email Warm Up tools in 2022
Mailwarm helps you achieve the required email activity both quantitatively and qualitatively in order to enter the main inbox. The Mailwarm team has set up +1000 email accounts that will interact with your inbox on a schedule you define. The service offers personalized emails designed to mimic human-to-human conversation. Mailwarmโ€™s methods, according to users of the...
Source: mailmeteor.com

Social recommendations and mentions

Based on our record, Nextcloud seems to be more popular. It has been mentiond 304 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Nextcloud mentions (304)

  • My personal journey learning about prompt-injections and how that influences my use of AI (agents)
    So what about having a stricter separation between data and instructions? Let's look at that using, for example, the Nextcloud AI assistant. Nextcloud-Hub is a self-hosted file storage platform with collaboration tools. It has also an AI Assistant App and guess what, it can summarize text (and much more). I've set it all up with the OpenAI API using the gpt-5-chat-latest model. When I click on any file and... - Source: dev.to / 4 months ago
  • Nextcloud vs ownCloud: Which File Server to Use?
    Nextcloud and ownCloud share a common ancestor. In 2016, Nextcloud's founder (Frank Karlitschek, who also founded ownCloud) forked ownCloud to create Nextcloud, taking most of the developer community with him. Since then, the projects have diverged significantly. - Source: dev.to / 5 months ago
  • Ask HN: What's your favorite self-hosted application?
    Previously Nextcloud [1], currently bewCloud [2]. Full disclosure: I created bewCloud as a simpler, faster, and modern alternative to Nextcloud. They've allowed me to get my Files (including Photos), Calendars, Contacts, and RSS feeds off of Big Tech. [1] https://nextcloud.com [2] https://bewcloud.com. - Source: Hacker News / 7 months ago
  • Apple has locked my Apple ID, and I have no recourse. A plea for help
    I run a nextcloud [1] instance and use it for contacts, calendars, and reminders 1. https://nextcloud.com. - Source: Hacker News / 8 months ago
  • Europe just dropped a cloud rulebook (and itโ€™s actually good)
    This is the same energy behind projects like Gaia-X, Nextcloud, and the open-source revival happening across the continent. Itโ€™s not nostalgia for on-prem servers itโ€™s a philosophy: control what you depend on. - Source: dev.to / 9 months ago
View more

Mailwarm mentions (0)

We have not tracked any mentions of Mailwarm yet. Tracking of Mailwarm recommendations started around Mar 2021.

What are some alternatives?

When comparing Nextcloud and Mailwarm, you can also consider the following products

Dropbox - Online Sync and File Sharing

Warmbox.ai - Warm up your cold email inbox, and never land in spam anymore!

Google Drive - Access and sync your files anywhere

MailReach.co - The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

Mega - Secure File Storage and collaboration

Warmup Inbox - Warmup Inbox is a tool that automates the process of warming up your email inboxes, raising your sender reputation and inbox health automatically.