Mailo privacy rating

Summary

Mailo scores 34 out of 100 (grade F) on the email providers criteria. It meets 5 of 21 criteria: TLS configuration, open protocols, custom domains, sign up without personal data and POP3 support. It partly meets no ads or data sales, transparency report, end-to-end encryption, IMAP support and SMTP submission. It does not meet open source, no trackers or telemetry, independent audit, tells users about requests, security headers, modern web standards, encrypted mailbox storage, email security standards, mail transport security, Sender Rewriting Scheme and ARC sealing. It is based in France: Nine Eyes member; EU member (GDPR). Automated tests: SSL Labs grade A+, Mozilla HTTP Observatory grade B-, Internet.nl website score 51% and Internet.nl email score 59%.

Score 34 out of 100. How scoring works

Criteria

• ✖No

  Open source ×3Weight 3 of 3

  Is all the source code needed to run the product public?

  Closed source. The service runs on Mailo's own MailObject technology.

  mailo.com

• ✖No

  No trackers or telemetry ×3Weight 3 of 3

  Are the website and apps free of third-party trackers, with any analytics anonymous and any telemetry off by default?

  The home page loads no third-party trackers, but the free webmail lets advertising agencies set cookies after consent through the Sirdata consent platform.

  mailo.com

• ◐Partial

  No ads or data sales ×2Weight 2 of 3

  Is the product funded without advertising, ad targeting or selling user data?

  Mailo Free shows advertising banners, personalized by agency cookies only with consent. Mail content is not used for ads, data is not shared with ad agencies, and paid plans have no ads.

  mailo.com

• ✖No

  Independent audit ×2Weight 2 of 3

  Has an independent security or privacy audit been published within the last three years?

  No independent audit is published. The privacy rules mention internal audits only.

  mailo.com

• ◐Partial

  Transparency report ×2Weight 2 of 3

  Does the provider regularly publish how many government and legal requests it receives and how it responds?

  Data is given to police and justice authorities only within a legal framework with a magistrate's authorization. No request counts are published.

  mailo.com

• ✖No

  Tells users about requests ×1Weight 1 of 3

  Does the provider promise to tell users about requests for their data, unless a court forbids it?

  No published policy on notifying users about data requests.

• ◐Partial

  End-to-end encryption ×3Weight 3 of 3

  Can mail be end-to-end encrypted so that the provider cannot read message contents?

  OpenPGP is built into the webmail, with keys held on Mailo's servers as a trusted third party. Not on by default. Keeping keys away from Mailo needs a mail app with PGP support.

  mailo.com

• ✖No

  Encrypted mailbox storage ×3Weight 3 of 3

  Is stored mail encrypted with a key the provider does not hold?

  Encryption at rest for stored mail is not documented. Mail is scanned on Mailo's servers for spam and viruses.

  mailo.com

• ✔Yes

  Open protocols ×2Weight 2 of 3

  Can any standard app connect over IMAP, POP3, SMTP, CalDAV or CardDAV, without extra software?

  IMAP, SMTP, CalDAV and CardDAV work on every plan, including Mailo Free. POP3 needs a Premium plan.

  faq.mailo.com

• ✔Yes

  Custom domains ×1Weight 1 of 3

  Can mail be sent and received with your own domain?

  An external domain can be added for free and used with a Premium, Family or Pro subscription.

  faq.mailo.com

• ✔Yes

  Sign up without personal data ×2Weight 2 of 3

  Can an account be created without a phone number or another email address?

  No phone number or other email address is required. Registration asks for a name and date of birth to check the minimum age.

  mailo.com

• ✖No

  Sender Rewriting Scheme ×1Weight 1 of 3

  Is the envelope sender rewritten with SRS when mail is forwarded, so forwarded mail keeps passing SPF?

  No published documentation on SRS for forwarded mail.

• ✖No

  ARC sealing ×1Weight 1 of 3

  Does the provider validate and add ARC (RFC 8617) signatures, so authentication results survive forwarding?

  No published documentation on ARC signing or validation.

Automated tests

• ✔Yes

  TLS configuration ×2Weight 2 of 3

  Does the website pass the Qualys SSL Labs test with a grade of A or better?

  Grade A+

  ssllabs.com

• ✖No

  Security headers ×1Weight 1 of 3

  Does the website pass the Mozilla HTTP Observatory test with a grade of A or better?

  Grade B- (65/100+)

  developer.mozilla.org

• ✖No

  Modern web standards ×1Weight 1 of 3

  Does the website score 90% or higher on the Internet.nl website test?

  Score 51%

  batch.internet.nl

• ✖No

  Email security standards ×2Weight 2 of 3

  Does the mail domain score 90% or higher on the Internet.nl email test?

  Score 59%

  batch.internet.nl

• ◐Partial

  IMAP support ×2Weight 2 of 3

  Does the IMAP server accept connections over implicit TLS on port 993 and advertise IMAP4rev1 or IMAP4rev2 with IDLE push?

  mail.mailo.com:993 (implicit TLS). IMAP4rev1 advertised, no IDLE before login.

• ✔Yes

  POP3 support ×1Weight 1 of 3

  Does the POP3 server accept connections over implicit TLS on port 995 and answer CAPA with UIDL?

  mail.mailo.com:995 (implicit TLS). CAPA: TOP, UIDL, USER, STLS.

• ◐Partial

  SMTP submission ×2Weight 2 of 3

  Does mail submission work over implicit TLS on port 465 with SMTPUTF8, 8BITMIME, PIPELINING and AUTH?

  mail.mailo.com:465 (implicit TLS). Missing: SMTPUTF8, 8BITMIME.

• ✖No

  Mail transport security ×3Weight 3 of 3

  Does the mail domain enforce encrypted, authenticated delivery with MTA-STS, DANE, DNSSEC, TLS-RPT and an enforced DMARC policy?

  Passes: SPF, DMARC quarantine. Missing: MTA-STS missing, TLS-RPT, DNSSEC, DANE none.

Email standards

• ✔Yes: Mail serversMXmx.mailo.com
• ✔Yes: RFC 7208 sender policySPFpublished
• ✔Yes: RFC 7489. Quarantine or reject counts as enforcedDMARCp=quarantine
• ✖No: RFC 8461 strict transport securityMTA-STSmissing
• ✖No: RFC 8460 TLS failure reportsTLS-RPTmissing
• ✖No: RFC 4033 signed DNSDNSSECnot validated
• ✖No: RFC 7672 TLSA records on MX hostsDANEnone
• ✖No: Brand logo record (not scored)BIMInone
• ✖No: RFC 6186 and RFC 8314 service records (not scored)SRVnone

Capabilities are what each server advertises before login. How these tests work