Best 4SecureMail Alternatives in 2026
The top 4SecureMail alternatives are Proton Mail, Tuta Mail and eclipso Mail Europe: 15 private email services our editors would look at instead of 4SecureMail, in our ranking order.
4SecureMail: A protocol-friendly hosted email service for custom domains, with paid plans only. Where it falls short: no free plan; paid access starts at $8.24 per month.
Switching from 4SecureMail? For most private email services buyers the best 4SecureMail alternative is Proton Mail, built for most people wanting private email. On a budget, Aster Mail starts at $2.42/mo. Aster Mail offers the most mailbox storage (50 GB).
Why People Look for a 4SecureMail Alternative
- No free plan; paid access starts at $8.24 per month
- Standard email protection uses transport encryption
- Calendar functionality is not included
- No free plan — 9 of the alternatives below have it
- No private calendar — 1 of the alternatives below has it
Quick Picks by What You Need
- Best overallProton Mail9.4
Most people wanting private email
Visit Proton Mail - Lowest priceAster Mail8.4
Paid plans from $2.42/mo
Visit Aster Mail - Best free optionProton Mail9.4
Has a free plan (4SecureMail has none)
Visit Proton Mail - Most mailbox storageAster Mail8.4
50 GB
Visit Aster Mail - Best for private calendareclipso Mail Europe8.6
Private calendar (4SecureMail: no)
Visit eclipso Mail Europe
All 15 4SecureMail Alternatives, Ranked
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
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Best forMost people wanting private email
- Better than 4SecureMail:
- Free plan
- Mailbox storage: 15 GB vs 0.5 GB
- Email aliases: 10 aliases vs 3 aliases
A private email service with encryption, migration tools, and a permanent free plan.
9.4/10★★★★★Visit Proton Mail -
Best forUsers prioritizing comprehensive encryption
- Better than 4SecureMail:
- Free plan
- Mailbox storage: 20 GB vs 0.5 GB
- Email aliases: 15 aliases vs 3 aliases
A privacy-focused email service with strong encryption and limited third-party integration.
9.2/10★★★★★Visit Tuta Mail -
Best forA full private mail and productivity suite
- Better than 4SecureMail:
- Free plan
- Private calendar
- Mailbox storage: 10 GB vs 0.5 GB
A private email and productivity suite with free access and low-cost paid tiers.
- Private calendar
- IMAP support
- Custom domains
8.6/10★★★★☆Visit site -
Best forPower users wanting modern encrypted email
- Better than 4SecureMail:
- Free plan
- Mailbox storage: 50 GB vs 0.5 GB
- Email aliases: 15 aliases vs 3 aliases
A privacy-focused email service with strong encryption, broad client support, and flexible paid tiers.
8.4/10★★★★☆Visit Aster Mail -
Best forFamilies and teams wanting private email
- Better than 4SecureMail:
- Free plan
- Editor score 8.3 vs 6.0
Affordable private email with custom domains, shared addresses, and encrypted storage.
- Custom domains
8.3/10★★★★☆Visit Thelemail -
Best forBudget users needing lots of aliases
- Better than 4SecureMail:
- Free plan
- Mailbox storage: 20 GB vs 0.5 GB
- Email aliases: 100 aliases vs 3 aliases
A low-cost private email service with unusually generous alias limits on Premium.
8.1/10★★★★☆Visit Mailo -
Best forUsers wanting encrypted mail plus collaboration
- Better than 4SecureMail:
- Free plan
- Mailbox storage: 5 GB vs 0.5 GB
- Email aliases: 10 aliases vs 3 aliases
Encrypted email with calendars, storage, groups, and flexible client connectivity.
8.0/10★★★★☆Visit Mailfence -
Best forPrivacy-focused users wanting burner aliases
- Better than 4SecureMail:
- Mailbox storage: 20 GB vs 0.5 GB
- Editor score 7.9 vs 6.0
A privacy-focused mailbox with unlimited aliases, encryption, and IMAP/SMTP access.
7.9/10★★★★☆Visit StartMail -
Best forUsers valuing anonymous registration and payment
- Better than 4SecureMail:
- Mailbox storage: 2 GB vs 0.5 GB
- Email aliases: 20 aliases vs 3 aliases
- Editor score 7.8 vs 6.0
A privacy-focused paid mailbox with encryption, aliases, and anonymous payment options.
7.8/10★★★★☆Visit Posteo -
Best forAffordable protocol-compatible private email
- Better than 4SecureMail:
- Mailbox storage: 2 GB vs 0.5 GB
- Email aliases: 100 aliases vs 3 aliases
- Editor score 7.7 vs 6.0
A flexible paid email service for private hosting and familiar mail clients.
7.7/10★★★★☆Visit Runbox -
Best forLow-cost users needing standard mail protocols
- Better than 4SecureMail:
- Mailbox storage: 2 GB vs 0.5 GB
- Editor score 7.6 vs 6.0
A low-cost private email service with standard protocols, aliases, and optional collaboration tools.
7.6/10★★★★☆Visit mailbox -
Best forUsers wanting large storage and unlimited aliases
- Better than 4SecureMail:
- Mailbox storage: 25 GB vs 0.5 GB
- Editor score 7.5 vs 6.0
A private mailbox with 25 GB storage, unlimited aliases, and broad client support.
7.5/10★★★★☆Visit Soverin -
Best forUsers wanting private email plus groupware
- Better than 4SecureMail:
- Mailbox storage: 5 GB vs 0.5 GB
- Editor score 7.4 vs 6.0
Kolab Now combines private email, PGP encryption and groupware without a free plan.
7.4/10★★★★☆Visit Kolab Now -
Best forUsers wanting newer high-assurance encryption
- Better than 4SecureMail:
- Free plan
- Editor score 7.3 vs 6.0
A privacy-focused email service with strong encryption and practical paid-tier upgrades.
- Custom domains
7.3/10★★★★☆Visit Secria Mail -
Best forDevelopers needing private mail with an API
- Better than 4SecureMail:
- Free plan
- Mailbox storage: 10 GB vs 0.5 GB
- Editor score 7.2 vs 6.0
A private mailbox with developer tooling, standard protocols, and a free entry plan.
- IMAP support
- Custom domains
7.2/10★★★★☆Visit VibeMail
4SecureMail Alternatives: Common Questions
What is the best alternative to 4SecureMail?
Proton Mail: #1 in our Private Email Services ranking, with an editor score of 9.4 out of 10. A private email service with encryption, migration tools, and a permanent free plan.
Is there a free alternative to 4SecureMail?
Yes. Proton Mail, Tuta Mail, eclipso Mail Europe, Aster Mail and Thelemail have a free plan or a free tier (9 of the 15 alternatives on this page).
What is the cheapest paid alternative to 4SecureMail?
Of the alternatives here that publish a price, Aster Mail starts lowest, at $2.42/mo.
Why do people look for 4SecureMail alternatives?
No free plan; paid access starts at $8.24 per month; Standard email protection uses transport encryption; Calendar functionality is not included.
Which 4SecureMail alternative has the most mailbox storage?
Aster Mail, with 50 GB.
How do I switch from 4SecureMail?
Export your data from 4SecureMail (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel 4SecureMail.
How to Switch from 4SecureMail
- Export your data from 4SecureMail (most tools have an export in their settings).
- Sign up for the alternative; start on its free plan or trial if it has one.
- Import your export and set up the integrations your team relies on.
- Run both side by side for a short while, then cancel 4SecureMail.
4SecureMail vs Each Alternative
| # | Tool | Free plan | Paid from | Mailbox storage | Email aliases | Score |
|---|---|---|---|---|---|---|
| 28 | 4SecureMail | No | $65.99/yr | 0.5 GB | 3 aliases | 6.0 |
| 1 | Proton Mail | Yes | $3.99/user/mo | 15 GB | 10 aliases | 9.4 |
| 2 | Tuta Mail | Yes | €3/user/mo | 20 GB | 15 aliases | 9.2 |
| 3 | eclipso Mail Europe | Yes | €1.49/mo | 10 GB | 10 aliases | 8.6 |
| 4 | Aster Mail | Yes | $2.42/mo | 50 GB | 15 aliases | 8.4 |
| 5 | Thelemail | Yes | €24/user/yr | 8.3 | ||
| 6 | Mailo | Yes | €1.50/user/mo | 20 GB | 100 aliases | 8.1 |
| 7 | Mailfence | Yes | €2.50/mo | 5 GB | 10 aliases | 8.0 |
| 8 | StartMail | No | $59.88/user/yr | 20 GB | 7.9 | |
| 9 | Posteo | No | €1/user/mo | 2 GB | 20 aliases | 7.8 |
| 10 | Runbox | No | €1.66/user/mo | 2 GB | 100 aliases | 7.7 |
| 11 | mailbox | No | €1/user/mo | 2 GB | 3 aliases | 7.6 |
| 12 | Soverin | No | €3.25/user/mo | 25 GB | 7.5 | |
| 13 | Kolab Now | No | 5 CHF/user/mo | 5 GB | 7.4 | |
| 14 | Secria Mail | Yes | $4.99/user/mo | 7.3 | ||
| 15 | VibeMail | Yes | $2.99/mo | 10 GB | 7.2 |
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update