Fastmail or ProtonMail? Find out which is the best
Choosing between Fastmail and Proton Mail can be confusing because both focus on private, secure email without the advertising model used by many free email providers. But they are built around different priorities. Fastmail is stronger for everyday email, search, custom domains, calendars, and flexibility, while Proton Mail puts more emphasis on end-to-end encryption and privacy.
Fastmail or ProtonMail: Which Is Better?
For most people who want a fast, flexible replacement for Gmail or Outlook, Fastmail is the better everyday email service. It offers strong privacy, excellent search, custom domains, masked email, calendars, and support for standard email apps.
Proton Mail is the better choice if maximum email privacy and zero-access encryption are your top priorities. Proton also makes sense if you want to use other privacy-focused services such as Proton VPN, Proton Drive, and Proton Pass.
The right choice depends less on which service has more features and more on what you want your email provider to do.
Fastmail vs Proton Mail at a Glance
| Feature | Fastmail | Proton Mail |
|---|---|---|
| Main focus | Private, flexible email and productivity | Privacy and encrypted email |
| Free plan | No permanent free personal plan; trial available | Yes |
| Custom domains | Yes | Yes on paid plans |
| Email encryption | Strong encryption, but different from zero-access encryption | Zero-access encryption and end-to-end encryption |
| Calendar | Yes | Yes |
| Contacts | Yes | Yes |
| Masked email | Yes | Yes, with plan limits |
| Third-party email apps | Excellent support | Supported through Proton’s ecosystem and Mail Bridge on eligible plans |
| Open email standards | Strong JMAP, IMAP, CalDAV and CardDAV support | More controlled around the Proton ecosystem |
| Best for | Everyday users, professionals, custom-domain users | Privacy-focused users |
| Wider ecosystem | Focused mainly on email, calendar and contacts | Mail, VPN, Drive, Pass and more |
| Permanent free option | No | Yes |
| Best privacy architecture | Good | Proton’s stronger zero-access approach |
Both services offer considerably more privacy than an ad-supported mailbox, but they make different technical and product choices.
The Biggest Difference Between Fastmail and Proton Mail
The most important difference is how each company approaches email privacy.
Fastmail encrypts data and has strong privacy policies, but it does not use the same zero-access encryption model for stored mail that Proton Mail uses.
Proton Mail is designed around that privacy-first model. Its stored mail uses zero-access encryption, meaning Proton does not have the ability to read the encrypted contents of your mailbox. Messages between Proton Mail users can also use end-to-end encryption automatically.
That creates a simple distinction:
- Fastmail: privacy plus flexibility and productivity.
- Proton Mail: privacy and encryption as the central product priority.
If you simply want a private email service that works like a traditional email provider, Fastmail may feel more natural. If you specifically want an encrypted mailbox designed to minimize provider access to your messages, Proton Mail has the stronger case.
Fastmail: What Makes It Different?
Fastmail has been around for years and focuses heavily on making email itself work well.
Its personal plans combine email, contacts, calendars, custom addresses, masked email, offline support, scheduled sending, snoozing, rules, spam controls, and other productivity features.
Fastmail’s strongest feature: flexibility
Fastmail is particularly attractive if you don’t want your email account locked into one application.
It supports modern email standards such as JMAP and traditional protocols such as IMAP. It also supports CalDAV and CardDAV for calendars and contacts. That makes it easier to connect Fastmail with other apps and services.
For example, a user who prefers Apple Mail, Outlook, or another compatible email application can continue using that workflow instead of being forced to use only Fastmail’s interface.
Fastmail is strong for custom domains
If you own a domain such as yourname.com, Fastmail lets you create addresses using that domain.
This is useful for:
- Freelancers
- Consultants
- Small-business owners
- Professionals
- Families
- People building a long-term personal email identity
You can also create additional addresses and use Fastmail’s Masked Email feature to avoid giving your primary address to every website.
Fastmail is built for everyday productivity
Fastmail isn’t just about hiding your email from advertisers.
It includes features designed for managing a busy inbox, including powerful search, scheduled sending, snoozing, rules, folders, labels, calendars, contacts, and offline access.
That makes it particularly appealing to someone who treats email as a daily work tool.
Proton Mail: What Makes It Different?
Proton Mail takes a more privacy-focused approach.
Proton is designed around encrypted services, and Mail is part of a larger ecosystem that includes Proton VPN, Proton Drive, and Proton Pass. Its paid plans can combine these services under one account.
Proton Mail’s biggest advantage: encryption
Proton Mail’s strongest selling point is its encryption architecture.
Messages between Proton Mail users can be end-to-end encrypted. Proton also uses zero-access encryption for stored messages, meaning Proton cannot decrypt those messages itself. Proton supports password-protected messages for communication with people outside Proton Mail as well.
This matters if your concern isn’t simply “Will my provider show me ads?” but rather “Can my email provider technically read my stored messages?”
For privacy-conscious users, that distinction can be significant.
Proton has a useful free option
One major difference is that Proton Mail offers a permanent free tier.
Proton’s free plan provides a basic mailbox, while paid plans add features such as additional storage, custom domains, more addresses, aliases, and other capabilities depending on the plan.
That makes Proton easier to try long term without immediately paying for an email subscription.
Privacy and Security: Fastmail vs Proton Mail
If security is your main concern, Proton Mail has the clearest advantage.
Fastmail uses encryption and has security controls, but its architecture is not designed around the same zero-access model used by Proton. Zero-access encryption offers a different level of protection against certain threats, while also creating some functional trade-offs.
Proton’s architecture is more heavily centered on encryption.
| Privacy factor | Fastmail | Proton Mail |
|---|---|---|
| Encrypted connections | Yes | Yes |
| Encrypted stored email | Yes | Yes |
| Zero-access encryption for stored mail | No | Yes |
| End-to-end encrypted Proton-to-Proton email | Not its primary architecture | Yes |
| Password-protected external emails | Not the same approach | Yes |
| Privacy-focused business model | Yes | Yes |
So if privacy means minimizing the provider’s technical ability to access your email, Proton Mail is the stronger option.
If privacy means no advertising, less tracking, strong account security, and a private paid email service, Fastmail can still be an excellent choice.
Which Is Better for Custom Domains?
Both Fastmail and Proton Mail support custom domains, so neither loses here.
The difference is more about the overall workflow.
Fastmail has long positioned custom-domain email as a major part of its service. You can use addresses such as you@yourdomain.com while keeping Fastmail’s email, calendar, contacts, filtering, and other tools.
Proton Mail also supports custom domains on paid plans.
Winner for most custom-domain users: Fastmail.
It’s especially attractive if your main goal is professional email hosting rather than building a broader encrypted-service ecosystem.
Which Is Better for Businesses?
For a small business that mainly needs reliable email hosting, Fastmail is often the more straightforward choice.
Fastmail’s business plans include custom business addresses, shared email addresses, shared calendars, shared company contacts, administration tools, and different storage levels.
Proton also offers business plans and has a strong privacy story, so it can be a better fit for organizations where confidentiality is a major requirement.
The decision comes down to priorities:
- Choose Fastmail for traditional business email hosting and flexibility.
- Choose Proton Mail when privacy and encrypted communication are central requirements.
Neither should automatically be treated as the right solution for every regulated or highly sensitive organization. Business compliance requirements should be checked against the provider’s current plan and policies before making a purchase.
Which Has Better Email Apps and Compatibility?
This is another area where Fastmail has an advantage.
Fastmail supports standard protocols and works with third-party applications such as Outlook and Apple Mail. It also supports JMAP, IMAP, CalDAV, and CardDAV.
Proton Mail has its own apps and web experience and also supports third-party email clients through Proton Mail Bridge on eligible plans. Proton’s approach is more tightly connected to its security architecture.
If you like choosing your own email application, Fastmail is usually the easier option.
If you prefer a privacy-focused ecosystem with a dedicated Proton experience, Proton Mail may be more appealing.
Which Is Better for Search and Managing a Large Inbox?
Fastmail has the edge for users who live in their inbox.
Fastmail emphasizes fast search and access to your full email history. It also provides folders, labels, rules, spam controls, VIP contacts, snoozing, and scheduled sending.
That can matter more than it sounds.
Imagine you have five years of work email and need to find an old invoice, client conversation, or attachment. A good search system can save far more time than a small difference in storage space.
Proton Mail also provides folders, labels, filters, and search, but its primary product identity is more closely tied to privacy and encryption.
For heavy everyday email management, Fastmail is the better fit.
Fastmail or ProtonMail: Which Has Better Extra Services?
This is where Proton Mail has a major advantage.
Fastmail concentrates on email, calendars, contacts, and related productivity features.
Proton has built a broader privacy ecosystem that includes:
- Proton Mail
- Proton VPN
- Proton Drive
- Proton Pass
- Proton Calendar
Some paid Proton plans bundle several of these services together.
That can make Proton particularly attractive if you want to replace several services with one privacy-focused provider.
Fastmail or ProtonMail: Which Is Cheaper?
Price depends on the plan, billing period, storage needs, and whether you need additional services.
Fastmail offers personal, Duo, Family, and business plans, with different storage levels and features. Its personal plans include a trial period rather than a permanent free personal account.
Proton offers a free plan as well as paid Mail and broader Proton bundles. The paid plans provide more storage, addresses, custom-domain support, aliases, and other features depending on the plan.
The better value depends on what you’re actually going to use.
Choose Fastmail if you mainly need excellent email hosting.
Choose Proton if you will use multiple Proton services in addition to email.
A cheap email plan isn’t necessarily the better deal if you end up paying separately for VPN, cloud storage, and password management elsewhere.
Fastmail vs Proton Mail for Different Types of Users
Choose Fastmail if you are leaving Gmail or Outlook
Fastmail is a strong choice if your goal is simply to move away from mainstream advertising-supported email while keeping a familiar email workflow.
You get private, ad-free email plus calendars, contacts, custom domains, aliases, filtering, search, and support for standard email applications.
Choose Proton Mail if privacy is your top priority
If you are specifically looking for encrypted email and want your provider to have as little technical access to your stored messages as possible, Proton Mail makes more sense.
Its zero-access architecture is a fundamental part of the service rather than just an additional security feature.
Choose Fastmail for a professional custom-domain address
If your main requirement is something like hello@yourbusiness.com, Fastmail is an excellent option.
It combines custom-domain hosting with calendars, contacts, aliases, filtering, search, and support for standard email applications.
Choose Proton Mail if you want a broader privacy ecosystem
If you’re also interested in private cloud storage, a VPN, and password management, Proton’s ecosystem can provide more value from a single subscription.
Two Real-World Examples
Consider a freelance designer who wants to stop using Gmail for client communication. They need a custom domain, excellent search, calendar integration, aliases, and the ability to use their preferred email application.
Fastmail would probably be the better fit.
Now consider someone who handles highly private personal communications and cares most about reducing the email provider’s ability to access stored messages.
Proton Mail would probably be the better fit because its zero-access and end-to-end encryption approach is central to the service.
Fastmail or ProtonMail: The Final Verdict
There isn’t one universal winner.
Fastmail is the better overall choice for most people who want a private, polished, flexible email service. Its combination of search, custom domains, calendars, contacts, aliases, third-party app support, and productivity features makes it a strong Gmail or Outlook alternative.
Proton Mail is the better choice for privacy-first users. If encryption and reducing the provider’s technical access to your stored email matter more than maximum compatibility and traditional email flexibility, Proton is the stronger option.
The simplest way to decide is this:
| If you care most about… | Pick |
|---|---|
| Everyday email experience | Fastmail |
| Powerful email organization | Fastmail |
| Custom-domain email | Fastmail |
| Third-party email clients | Fastmail |
| Privacy-focused encryption | Proton Mail |
| Zero-access encryption | Proton Mail |
| Free long-term email | Proton Mail |
| VPN + cloud storage + password manager | Proton |
| A Gmail/Outlook replacement | Fastmail |
| Maximum privacy as the main goal | Proton Mail |
Frequently Asked Questions
Is Fastmail more private than Proton Mail?
Fastmail is a privacy-focused paid email service, but Proton Mail has the stronger privacy architecture because it uses zero-access encryption for stored email and supports end-to-end encrypted communication. If minimizing provider access to email content is your main concern, Proton Mail is the better choice.
Can I use my own domain with Fastmail and Proton Mail?
Yes. Both services support custom domains on eligible paid plans. Fastmail makes custom-domain hosting a major part of its email offering, while Proton Mail includes custom-domain support with paid plans.
Is Proton Mail better than Fastmail for everyday use?
Not necessarily. Proton Mail is better when privacy and encryption are your main priorities, while Fastmail can be better for everyday productivity, search, custom domains, standard email-client support, and managing a large inbox.
Choosing between Fastmail and Proton Mail can be confusing because both focus on private, secure email without the advertising model used by many free email providers. But they are built around different priorities. Fastmail is stronger for everyday email, search, custom domains, calendars, and flexibility, while Proton Mail puts more emphasis on end-to-end encryption and privacy.
Fastmail or ProtonMail: Which Is Better?
For most people who want a fast, flexible replacement for Gmail or Outlook, Fastmail is the better everyday email service. It offers strong privacy, excellent search, custom domains, masked email, calendars, and support for standard email apps.
Proton Mail is the better choice if maximum email privacy and zero-access encryption are your top priorities. Proton also makes sense if you want to use other privacy-focused services such as Proton VPN, Proton Drive, and Proton Pass.
The right choice depends less on which service has more features and more on what you want your email provider to do.
Fastmail vs Proton Mail at a Glance
| Feature | Fastmail | Proton Mail |
|---|---|---|
| Main focus | Private, flexible email and productivity | Privacy and encrypted email |
| Free plan | No permanent free personal plan; trial available | Yes |
| Custom domains | Yes | Yes on paid plans |
| Email encryption | Strong encryption, but different from zero-access encryption | Zero-access encryption and end-to-end encryption |
| Calendar | Yes | Yes |
| Contacts | Yes | Yes |
| Masked email | Yes | Yes, with plan limits |
| Third-party email apps | Excellent support | Supported through Proton’s ecosystem and Mail Bridge on eligible plans |
| Open email standards | Strong JMAP, IMAP, CalDAV and CardDAV support | More controlled around the Proton ecosystem |
| Best for | Everyday users, professionals, custom-domain users | Privacy-focused users |
| Wider ecosystem | Focused mainly on email, calendar and contacts | Mail, VPN, Drive, Pass and more |
| Permanent free option | No | Yes |
| Best privacy architecture | Good | Proton’s stronger zero-access approach |
Both services offer considerably more privacy than an ad-supported mailbox, but they make different technical and product choices.
The Biggest Difference Between Fastmail and Proton Mail
The most important difference is how each company approaches email privacy.
Fastmail encrypts data and has strong privacy policies, but it does not use the same zero-access encryption model for stored mail that Proton Mail uses.
Proton Mail is designed around that privacy-first model. Its stored mail uses zero-access encryption, meaning Proton does not have the ability to read the encrypted contents of your mailbox. Messages between Proton Mail users can also use end-to-end encryption automatically.
That creates a simple distinction:
- Fastmail: privacy plus flexibility and productivity.
- Proton Mail: privacy and encryption as the central product priority.
If you simply want a private email service that works like a traditional email provider, Fastmail may feel more natural. If you specifically want an encrypted mailbox designed to minimize provider access to your messages, Proton Mail has the stronger case.
Fastmail: What Makes It Different?
Fastmail has been around for years and focuses heavily on making email itself work well.
Its personal plans combine email, contacts, calendars, custom addresses, masked email, offline support, scheduled sending, snoozing, rules, spam controls, and other productivity features.
Fastmail’s strongest feature: flexibility
Fastmail is particularly attractive if you don’t want your email account locked into one application.
It supports modern email standards such as JMAP and traditional protocols such as IMAP. It also supports CalDAV and CardDAV for calendars and contacts. That makes it easier to connect Fastmail with other apps and services.
For example, a user who prefers Apple Mail, Outlook, or another compatible email application can continue using that workflow instead of being forced to use only Fastmail’s interface.
Fastmail is strong for custom domains
If you own a domain such as yourname.com, Fastmail lets you create addresses using that domain.
This is useful for:
- Freelancers
- Consultants
- Small-business owners
- Professionals
- Families
- People building a long-term personal email identity
You can also create additional addresses and use Fastmail’s Masked Email feature to avoid giving your primary address to every website.
Fastmail is built for everyday productivity
Fastmail isn’t just about hiding your email from advertisers.
It includes features designed for managing a busy inbox, including powerful search, scheduled sending, snoozing, rules, folders, labels, calendars, contacts, and offline access.
That makes it particularly appealing to someone who treats email as a daily work tool.
Proton Mail: What Makes It Different?
Proton Mail takes a more privacy-focused approach.
Proton is designed around encrypted services, and Mail is part of a larger ecosystem that includes Proton VPN, Proton Drive, and Proton Pass. Its paid plans can combine these services under one account.
Proton Mail’s biggest advantage: encryption
Proton Mail’s strongest selling point is its encryption architecture.
Messages between Proton Mail users can be end-to-end encrypted. Proton also uses zero-access encryption for stored messages, meaning Proton cannot decrypt those messages itself. Proton supports password-protected messages for communication with people outside Proton Mail as well.
This matters if your concern isn’t simply “Will my provider show me ads?” but rather “Can my email provider technically read my stored messages?”
For privacy-conscious users, that distinction can be significant.
Proton has a useful free option
One major difference is that Proton Mail offers a permanent free tier.
Proton’s free plan provides a basic mailbox, while paid plans add features such as additional storage, custom domains, more addresses, aliases, and other capabilities depending on the plan.
That makes Proton easier to try long term without immediately paying for an email subscription.
Privacy and Security: Fastmail vs Proton Mail
If security is your main concern, Proton Mail has the clearest advantage.
Fastmail uses encryption and has security controls, but its architecture is not designed around the same zero-access model used by Proton. Zero-access encryption offers a different level of protection against certain threats, while also creating some functional trade-offs.
Proton’s architecture is more heavily centered on encryption.
| Privacy factor | Fastmail | Proton Mail |
|---|---|---|
| Encrypted connections | Yes | Yes |
| Encrypted stored email | Yes | Yes |
| Zero-access encryption for stored mail | No | Yes |
| End-to-end encrypted Proton-to-Proton email | Not its primary architecture | Yes |
| Password-protected external emails | Not the same approach | Yes |
| Privacy-focused business model | Yes | Yes |
So if privacy means minimizing the provider’s technical ability to access your email, Proton Mail is the stronger option.
If privacy means no advertising, less tracking, strong account security, and a private paid email service, Fastmail can still be an excellent choice.
Which Is Better for Custom Domains?
Both Fastmail and Proton Mail support custom domains, so neither loses here.
The difference is more about the overall workflow.
Fastmail has long positioned custom-domain email as a major part of its service. You can use addresses such as you@yourdomain.com while keeping Fastmail’s email, calendar, contacts, filtering, and other tools.
Proton Mail also supports custom domains on paid plans.
Winner for most custom-domain users: Fastmail.
It’s especially attractive if your main goal is professional email hosting rather than building a broader encrypted-service ecosystem.
Which Is Better for Businesses?
For a small business that mainly needs reliable email hosting, Fastmail is often the more straightforward choice.
Fastmail’s business plans include custom business addresses, shared email addresses, shared calendars, shared company contacts, administration tools, and different storage levels.
Proton also offers business plans and has a strong privacy story, so it can be a better fit for organizations where confidentiality is a major requirement.
The decision comes down to priorities:
- Choose Fastmail for traditional business email hosting and flexibility.
- Choose Proton Mail when privacy and encrypted communication are central requirements.
Neither should automatically be treated as the right solution for every regulated or highly sensitive organization. Business compliance requirements should be checked against the provider’s current plan and policies before making a purchase.
Which Has Better Email Apps and Compatibility?
This is another area where Fastmail has an advantage.
Fastmail supports standard protocols and works with third-party applications such as Outlook and Apple Mail. It also supports JMAP, IMAP, CalDAV, and CardDAV.
Proton Mail has its own apps and web experience and also supports third-party email clients through Proton Mail Bridge on eligible plans. Proton’s approach is more tightly connected to its security architecture.
If you like choosing your own email application, Fastmail is usually the easier option.
If you prefer a privacy-focused ecosystem with a dedicated Proton experience, Proton Mail may be more appealing.
Which Is Better for Search and Managing a Large Inbox?
Fastmail has the edge for users who live in their inbox.
Fastmail emphasizes fast search and access to your full email history. It also provides folders, labels, rules, spam controls, VIP contacts, snoozing, and scheduled sending.
That can matter more than it sounds.
Imagine you have five years of work email and need to find an old invoice, client conversation, or attachment. A good search system can save far more time than a small difference in storage space.
Proton Mail also provides folders, labels, filters, and search, but its primary product identity is more closely tied to privacy and encryption.
For heavy everyday email management, Fastmail is the better fit.
Fastmail or ProtonMail: Which Has Better Extra Services?
This is where Proton Mail has a major advantage.
Fastmail concentrates on email, calendars, contacts, and related productivity features.
Proton has built a broader privacy ecosystem that includes:
- Proton Mail
- Proton VPN
- Proton Drive
- Proton Pass
- Proton Calendar
Some paid Proton plans bundle several of these services together.
That can make Proton particularly attractive if you want to replace several services with one privacy-focused provider.
Fastmail or ProtonMail: Which Is Cheaper?
Price depends on the plan, billing period, storage needs, and whether you need additional services.
Fastmail offers personal, Duo, Family, and business plans, with different storage levels and features. Its personal plans include a trial period rather than a permanent free personal account.
Proton offers a free plan as well as paid Mail and broader Proton bundles. The paid plans provide more storage, addresses, custom-domain support, aliases, and other features depending on the plan.
The better value depends on what you’re actually going to use.
Choose Fastmail if you mainly need excellent email hosting.
Choose Proton if you will use multiple Proton services in addition to email.
A cheap email plan isn’t necessarily the better deal if you end up paying separately for VPN, cloud storage, and password management elsewhere.
Fastmail vs Proton Mail for Different Types of Users
Choose Fastmail if you are leaving Gmail or Outlook
Fastmail is a strong choice if your goal is simply to move away from mainstream advertising-supported email while keeping a familiar email workflow.
You get private, ad-free email plus calendars, contacts, custom domains, aliases, filtering, search, and support for standard email applications.
Choose Proton Mail if privacy is your top priority
If you are specifically looking for encrypted email and want your provider to have as little technical access to your stored messages as possible, Proton Mail makes more sense.
Its zero-access architecture is a fundamental part of the service rather than just an additional security feature.
Choose Fastmail for a professional custom-domain address
If your main requirement is something like hello@yourbusiness.com, Fastmail is an excellent option.
It combines custom-domain hosting with calendars, contacts, aliases, filtering, search, and support for standard email applications.
Choose Proton Mail if you want a broader privacy ecosystem
If you’re also interested in private cloud storage, a VPN, and password management, Proton’s ecosystem can provide more value from a single subscription.
Two Real-World Examples
Consider a freelance designer who wants to stop using Gmail for client communication. They need a custom domain, excellent search, calendar integration, aliases, and the ability to use their preferred email application.
Fastmail would probably be the better fit.
Now consider someone who handles highly private personal communications and cares most about reducing the email provider’s ability to access stored messages.
Proton Mail would probably be the better fit because its zero-access and end-to-end encryption approach is central to the service.
Frequently Asked Questions
Is Fastmail more private than Proton Mail?
Fastmail is a privacy-focused paid email service, but Proton Mail has the stronger privacy architecture because it uses zero-access encryption for stored email and supports end-to-end encrypted communication. If minimizing provider access to email content is your main concern, Proton Mail is the better choice.
Can I use my own domain with Fastmail and Proton Mail?
Yes. Both services support custom domains on eligible paid plans. Fastmail makes custom-domain hosting a major part of its email offering, while Proton Mail includes custom-domain support with paid plans.
Is Proton Mail better than Fastmail for everyday use?
Not necessarily. Proton Mail is better when privacy and encryption are your main priorities, while Fastmail can be better for everyday productivity, search, custom domains, standard email-client support, and managing a large inbox.
Fastmail or ProtonMail: The Final Verdict
There isn’t one universal winner.
Fastmail is the better overall choice for most people who want a private, polished, flexible email service. Its combination of search, custom domains, calendars, contacts, aliases, third-party app support, and productivity features makes it a strong Gmail or Outlook alternative.
Proton Mail is the better choice for privacy-first users. If encryption and reducing the provider’s technical access to your stored email matter more than maximum compatibility and traditional email flexibility, Proton is the stronger option.
The simplest way to decide is this:
| If you care most about… | Pick |
|---|---|
| Everyday email experience | Fastmail |
| Powerful email organization | Fastmail |
| Custom-domain email | Fastmail |
| Third-party email clients | Fastmail |
| Privacy-focused encryption | Proton Mail |
| Zero-access encryption | Proton Mail |
| Free long-term email | Proton Mail |
| VPN + cloud storage + password manager | Proton |
| A Gmail/Outlook replacement | Fastmail |
| Maximum privacy as the main goal | Proton Mail |
