MakuluLinux sits in an interesting spot in the Linux landscape: it is Ubuntu/Debian-based, typically uses APT/dpkg for native packages, and is often chosen by people who want a polished desktop without spending their evenings nursing the system back to health. Depending on the edition, you may find Cinnamon, MATE, Xfce, and some more visually distinctive environments in circulation, with a strong emphasis on ease of use and a fairly friendly out-of-the-box experience.

That matters when choosing an email client. On MakuluLinux, the most sensible options are generally the ones that either:

• ship as .deb packages or run cleanly as Flatpak apps,
• work well with the desktop notifications, tray, and integration expected by mainstream users,
• do not introduce unnecessary dependency sprawl, and
• are easy to maintain across Ubuntu-based releases.

For MakuluLinux specifically, I would focus on five clients from your list, with Proton Mail and Tuta Mail included because they are directly relevant and compatible through their available desktop packages:

• Thunderbird
• Betterbird
• Evolution
• Proton Mail
• Tuta Mail

If you want the shortest version: Thunderbird is the safest all-rounder, Evolution is the best fit if you live in the GNOME-style ecosystem or want calendar/contact integration, Betterbird is the “Thunderbird but tidier” option for power users, and Proton Mail / Tuta Mail are the obvious picks if your mail is already encrypted-first or privacy-focused.

What works best on MakuluLinux, and why

Brief assessment of the main contenders

Thunderbird remains the best default recommendation for MakuluLinux. It is available as a .deb, which means installation is straightforward and updates are easy to manage alongside the rest of the system. It supports multiple accounts, IMAP, POP, encryption, filters, and a huge extension ecosystem. On a distro like MakuluLinux, which is aimed at approachable desktop use, Thunderbird fits naturally because it is familiar, stable, and unlikely to surprise anyone.

Betterbird is a strong second choice if you like Thunderbird but want a slightly more polished experience. It is not as plug-and-play on MakuluLinux because the current distribution is a tar.xz archive rather than a native package. That means a little more manual handling, and therefore it suits users who are comfortable unpacking and launching applications themselves. In return, you get a Thunderbird-derived client with a number of refinements that some users find worthwhile.

Evolution is particularly appealing if the MakuluLinux desktop you are using feels GNOME-adjacent or if you manage not just email but also calendars, contacts, and tasks. It is well supported via Flatpak and also available as .deb. That makes it quite convenient on Ubuntu-based systems. It is especially good for people who work in office-style environments and want one application to cover mail plus personal information management.

Proton Mail is an easy recommendation for privacy-conscious users already invested in Proton. Since MakuluLinux supports .deb packages, installation is clean and conventional. The desktop app is not for people who want traditional local mail hosting in the same way Thunderbird or Evolution can do it, but for a cloud-centric encrypted workflow it is an excellent fit.

Tuta Mail is the other privacy-first option worth serious attention. On MakuluLinux, the Flatpak route is particularly convenient because it avoids dependency headaches and keeps the app isolated from the base system. If you want a modern encrypted mailbox and do not need advanced local mail features, Tuta is very practical.

What I would choose on MakuluLinux

For most users on MakuluLinux, I would rank the choices as follows:

1. Thunderbird — best overall balance of compatibility, flexibility, and ease of maintenance.
2. Evolution — best for users who want calendar/contact integration and a more “office suite” feel.
3. Proton Mail — best if you are committed to Proton services and want the desktop app.
4. Tuta Mail — best if privacy is the main priority and you are happy with Tuta’s ecosystem.
5. Betterbird — best for Thunderbird enthusiasts who want additional refinements and do not mind a manual install.

The reason Thunderbird edges it for many MakuluLinux installations is simple: a .deb package on an Ubuntu-based distro reduces friction. MakuluLinux users are often looking for something attractive and functional, not a project. Thunderbird respects that. Evolution is the strongest alternative if your workflow is more business-like. Proton and Tuta are excellent, but they make sense only if you already accept their service models.

Installing and configuring the 3 best options

1) Thunderbird

Thunderbird is the easiest mainstream client to deploy on MakuluLinux. If your edition has a graphical software centre, it may already be available there. Otherwise, using the native package manager is the neatest route.

Typical terminal installation:

sudo apt update
sudo apt install thunderbird

Once installed:

• Launch Thunderbird from the application menu.
• Choose Set Up an Existing Email Address.
• Enter your name, email address, and password.
• If your provider supports auto-discovery, Thunderbird usually fills in IMAP/SMTP details automatically.
• If not, use your provider’s IMAP and SMTP settings manually.

Recommended configuration steps on MakuluLinux:

• Enable system notifications so new-mail pop-ups appear cleanly in the desktop environment.
• Set the message store to IMAP unless you have a specific reason to keep mail entirely local.
• Install only the add-ons you genuinely need Thunderbird can become cluttered if you overdo it.
• If you use multiple accounts, create separate identities and signatures to avoid sending from the wrong mailbox.

Thunderbird is the sensible choice when you want a familiar interface, broad provider support, and minimal disruption on a Debian-based system.

2) Evolution

Evolution is a particularly good fit if MakuluLinux is running a desktop that feels close to GNOME, or if you want mail, calendar, and contacts in one place. On Ubuntu-based systems, I would usually prefer the Flatpak version if the native repository version is old, because it tends to deliver a more up-to-date build without disturbing system libraries.

Install via Flatpak:

flatpak install flathub org.gnome.Evolution
flatpak run org.gnome.Evolution

If Flatpak is not already enabled on your MakuluLinux installation, the distro may already have it configured, but if not, it can usually be installed through APT first. Once Evolution is running:

• Select Mail Account or Add Account.
• Enter your name and email address.
• Choose IMAP for modern accounts unless your provider explicitly says otherwise.
• Allow Evolution to probe server settings, then confirm incoming and outgoing server values.
• If you use calendars and contacts, add those during the same account setup if the provider supports CalDAV/CardDAV.

Useful tuning for MakuluLinux users:

• Check that desktop notifications are enabled in your current environment, particularly if you use Cinnamon or MATE.
• Use the calendar integration if you rely on appointments and reminders this is where Evolution really earns its keep.
• If you want a cleaner experience, disable features you do not use, such as task lists or address book sync for accounts that do not need them.

Evolution is the best “workplace” option in this list. It is especially attractive for users who want Outlook-like organisation without leaving Linux.

3) Proton Mail

Proton Mail is the best pick if your account already lives in the Proton ecosystem. Since MakuluLinux supports .deb packages, installation is straightforward and aligns well with the distro’s package management model.

Typical installation method:

sudo apt update
sudo apt install ./proton-mail.deb

If you download the package manually, use the exact filename provided by Proton. After installation:

• Launch the Proton Mail desktop app.
• Sign in with your Proton account.
• Complete any two-factor authentication if enabled.
• Allow the app to sync mail locally as required.

Practical notes for MakuluLinux:

• Proton Mail works best if you accept Proton’s web-first, privacy-first model.
• If you are switching from a classic IMAP workflow, be aware that Proton is not simply another standard mailbox in the traditional sense.
• Keep the desktop environment notifications enabled so new messages are visible in the panel or notification area.

For users already paying for Proton services, this is the most coherent desktop choice. It is not the most flexible client in the list, but it is one of the cleanest fits for a privacy-led workflow on MakuluLinux.

When Betterbird and Tuta Mail make sense

Betterbird is worth it if you are the sort of user who has already outgrown “plain Thunderbird” and wants a slightly more refined build without moving away from the Thunderbird family. The trade-off is installation convenience: the tar.xz distribution is less elegant on MakuluLinux than a native .deb or a Flatpak.

Tuta Mail is the best privacy alternative if you want a modern encrypted email service and do not want to manage traditional server settings. The Flatpak route is tidy on MakuluLinux, and that is important on a distro meant to be easy to maintain. If your workflow is webmail-like and privacy-driven, Tuta is a very respectable option.

Final recommendation

If I were setting up an average MakuluLinux desktop for a client or colleague, I would start with Thunderbird because it gives the least trouble and the broadest compatibility. If the user wanted a more integrated office-style mail suite, I would move to Evolution. If the user specifically lived inside Proton’s ecosystem, I would install Proton Mail without hesitation.

In other words, MakuluLinux is best served by clients that match its Ubuntu-based foundations and avoid awkward packaging. Native .deb packages and well-behaved Flatpaks are the sweet spot. That is why Thunderbird, Evolution, Proton Mail, and Tuta Mail stand out so clearly here.

Compatible email services worth considering

For MakuluLinux users, I would particularly recommend the following services:

• Proton Mail — a strong choice if privacy and encryption are central to your workflow. It pairs especially well with the Proton Mail desktop app and is ideal for users who want a modern, security-focused service.
• Tuta Mail — another privacy-first option with a clean desktop story via Flatpak or AppImage. Good for users who want encrypted mail without a complicated setup.
• Fastmail — excellent for professionals who want dependable IMAP access, good calendar support, and a no-nonsense experience. It works well with Thunderbird and Evolution.
• Mailfence — a good middle ground for users who want privacy features and open standards while still using a traditional mail client on MakuluLinux.

My practical recommendation is simple: use Thunderbird or Evolution with Fastmail or Mailfence if you want conventional mail, and choose Proton Mail or Tuta Mail if the service itself matters more than interoperability.