MECSA CONFIDENTIAL DELIVERY MECSA PHISHING AND IDENTITY THEFT MECSA INTEGRITY OF MESSAGES Email Security Grader IMAPS POP3S SMTPS SMTP DANE CAA SPF DKIM DMARC MTA-STS STARTTLS Everywhere Mozilla Observatory SSL Labs htbridge Crypt Check security headers HSTS preload list Referrers leaked Cookies Third-party requests Third-parties contacted Comments
mailbox.org 5.0 / 5.0 5.0 / 5.0 5.0 / 5.0 87% A A A A Yes No Yes Yes Disabled No Queued B A+ A+ A+ A Yes Partially 2 0 0 google captcha
dismail.de 5.0 / 5.0 5.0 / 5.0 5.0 / 5.0 98% A+ X A+ A+ Yes Yes Yes Yes Yes Yes Queued A+ A+ A+ A+ A+ Yes No 0 0 0
systemli.org 5.0 / 5.0 5.0 / 5.0 5.0 / 5.0 93% B B B B Yes Yes Yes Yes Disabled Testing No A+ A+ A+ A A Yes No 0 0 0
tutanota.com 5.0 / 5.0 5.0 / 5.0 5.0 / 5.0 91% X X X B Yes No Yes Yes Disabled No No B A+ A+ B B Yes Leaked 2 0 0
disroot.org 4.5 / 5.0 5.0 / 5.0 5.0 / 5.0 94% M M Timeout Timeout No No Yes Yes Disabled No No B A+ A+ A+ A Yes No 1 0 0
protonmail.com 4.5 / 5.0 5.0 / 5.0 5.0 / 5.0 91% X X X X No No Yes Yes Yes No No B A+ A+ A B Yes Leaked 2 4 2
riseup.net 4.0 / 5.0 4.5 / 5.0 5.0 / 5.0 91% Timeout Timeout Timeout Timeout No Yes Yes Yes disabled No No B A+ A+ Timeout A Yes No 0 0 0
gmail.com 4.0 / 5.0 4.5 / 5.0 5.0 / 5.0 88% C C C C No No Yes Yes Disabled Testing Yes A- A A+ C A Yes Leaked 2 5 3
mailfence.com 4.0 / 5.0 4.5 / 5.0 5.0 / 5.0 91% A A A A No No Yes Yes Disabled No No D+ A+ A+ A+ F Yes Error Error Error Error
kolabnow.com 5.0 / 5.0 5.0 / 5.0 5.0 / 5.0 85% Timeout X X A Yes Yes Yes Yes Yes No No B+ A+ A+ A+ A No No 3 1 1
lavabit.com 5.0 / 5.0 5.0 / 5.0 5.0 / 5.0 86% B B B Timeout Yes No Yes Yes Yes No No F A A C F No Leaked 0 0 0
posteo.de 5.0 / 5.0 5.0 / 5.0 5.0 / 5.0 91% C C C F Yes Yes Yes Yes Disabled No No B+ A+ A+ A+ A Yes No 1 0 0
mailjunky.de 4.0 / 5.0 4.5 / 5.0 5.0 / 5.0 77% X X X Timeout No No Yes Yes Disabled No No F B A+ C C No Leaked 4 13 7
directbox.com 5.0 / 5.0 5.0 / 5.0 5.0 / 5.0 91% C C F F Yes No Yes Yes Disabled No No B+ A A+ A A No Leaked 1 0 0
mail.de 5.0 / 5.0 5.0 / 5.0 5.0 / 5.0 66% F F F Timeout Yes Yes Yes Yes Disabled No No B A+ A+ B A Yes Leaked 4 10 6
fastmail.com 4.0 / 5.0 4.5 / 5.0 5.0 / 5.0 92% C C C Timeout No No Yes Yes Disabled No No A+ A+ A C A Yes Leaked 4 4 2 google_captcha
aol.com 4.0 / 5.0 4.5 / 5.0 5.0 / 5.0 58% C C X F No No Yes Yes Yes No No D A- A C A No Partially 136 346 103
5x2.de 4.0 / 5.0 4.5 / 5.0 5.0 / 5.0 91% C C C F No Yes Yes Yes Yes No No F A- A B F No Leaked 8 4 2
mail.yandex.ru 4.0 / 5.0 4.5 / 5.0 5.0 / 5.0 91% F F F Timeout No Yes Yes Yes Disabled No Yes B- A A+ F B No Leaked 9 45 2
hushmail.com 4.0 / 5.0 3.5 / 5.0 3.5 / 5.0 91% B B B Timeout No No Yes Yes No No No D A A+ B B No Leaked 2 0 0
runbox.com 4.0 / 5.0 3.5 / 5.0 3.5 / 5.0 93% C C C C No No Yes Yes No No No B A+ A+ C A No Leaked 1 0 0
cock.li 4.0 / 5.0 3.5 / 5.0 3.5 / 5.0 80% B B F F No No No Yes No No No D A+ A+ B D Yes Leaked 4 2 1
startmail.com 4.0 / 5.0 3.5 / 5.0 3.5 / 5.0 91% F X X C No No Yes Yes No No No F A+ A+ B F No Leaked 1 0 0
outlook.com 3.0 / 5.0 4.5 / 5.0 3.5 / 5.0 78% C C X M No No Yes Yes Disabled No Yes D A A+ C C No Leaked 3 42 5
danwin1210.me 0.0 / 5.0 4.0 / 5.0 3.5 / 5.0 78% B B B Timeout No No Yes Yes Yes No No D- A+ A+ B A Yes Partially 1 0 0
gmx.de 5.0 / 5.0 3.5 / 5.0 2.0 / 5.0 90% C C C C Yes No Yes No No No No C A+ A+ C B Yes Partially 60 227 61
web.de 5.0 / 5.0 3.5 / 5.0 2.0 / 5.0 90% C C X C Yes No Yes No No No No C A+ A+ C B Yes Partially 55 210 57
openmailbox.org 3.0 / 5.0 4.0 / 5.0 2.5 / 5.0 93% B X F M No No Yes No Disabled No No B A+ A+ B B No Leaked 0 2 1 Hostname Mismatch on mail.openmailbox.org
arcor.de 4.0 / 5.0 3.0 / 5.0 2.0 / 5.0 83% F X X Timeout No No Yes No No No No F A- A- C D No Leaked 79 296 91
skymail.de 4.0 / 5.0 3.0 / 5.0 2.0 / 5.0 57% ToDo ToDo ToDo ToDo No No Yes No No No No F A A+ B F No Leaked 0 3 2
ok.de 4.0 / 5.0 3.0 / 5.0 2.0 / 5.0 89% F F B B No No Yes No No No No F B B C F No Leaked 37 208 49
firemail.de 4.0 / 5.0 3.0 / 5.0 2.0 / 5.0 57% ToDo ToDo ToDo ToDo No No Yes No No No No F F B B F No Leaked 4 13 8 Advertising
netcourrier.com 4.0 / 5.0 3.0 / 5.0 2.0 / 5.0 91% B B B F No No Yes No No No No D B D F D No Leaked 1 19 1
gandi.net 4.0 / 5.0 3.0 / 5.0 2.0 / 5.0 95% C C C B No No Yes No No No No B- A A C B No Leaked 2 0 0
eclipso.de 4.0 / 5.0 3.0 / 5.0 2.0 / 5.0 62% B B B Timeout No No Yes No No No No C+ A+ A C B No Leaked 2 0 0 google_captcha;Advertising
freenet.de 5.0 / 5.0 0.0 / 5.0 2.0 / 5.0 66% B B B Timeout No Yes No No No No No C A+ A+ C A+ No No 134 543 149
ownbay.net 4.0 / 5.0 0.0 / 5.0 3.0 / 5.0 73% A A A A No No Syntax error No Syntax error No No B A+ A+ A A No Partially 2 5 5 google_captcha
t-online.de 4.0 / 5.0 0.0 / 5.0 2.0 / 5.0 66% C C M C No No No No No No No F A A- C F No Leaked 116 238 91
emailn.de 4.0 / 5.0 0.0 / 5.0 2.0 / 5.0 62% X X X F No No Yes No No No No D A A C D No Leaked 5 35 12 google_captcha;Advertising
online.de 4.0 / 5.0 0.0 / 5.0 2.0 / 5.0 50% C C C C No No No No No No No F A A B F No Leaked 105 130 63 1und1.de
freemail.ox.io ToDo ToDo ToDo 91% A X A A Yes No Yes ToDo No No No B A+ A+ A+ B No Leaked 0 0 0
so36.net ToDo ToDo ToDo 71% X A A A Yes No No ToDo No No No D+ A+ A+ A D No Leaked 0 0 0
boum.org ToDo ToDo ToDo 73% A A A Timeout No No No ToDo No No No D+ A+ A Timeout D No Leaked 0 0 0
immerda.ch ToDo ToDo ToDo 93% A A F Timeout No No Yes ToDo No No No B+ A A+ A A No Leaked 0 0 0
tchncs.de ToDo ToDo ToDo A M Timeout No TLS No No Yes ToDo No No No B A+ A+ A+ A No Partially 3 0 0
hosted.mailcow.de ToDo ToDo ToDo 93% B B B C Yes No Yes ToDo No No No B A+ A C B No No 1 0 0
icloud.com ToDo ToDo ToDo 84% C X X ToDo No No Yes ToDo No No Yes C+ A- A+ B B No Leaked 3 50 4
zoho.eu ToDo ToDo ToDo 86% B B B B No No Yes ToDo No No No D A+ A+ B D No Leaked 13 22 11
mail.com ToDo ToDo ToDo 90% C C C Timeout No No Yes ToDo No No No D- A+ A+ C D Yes Leaked 51 113 31
mail.lilo.org ToDo ToDo ToDo 71% F X X C No No No ToDo No No No D+ A+ A C D No Leaked 2 4 0
vmail.me ToDo ToDo ToDo 87% B B B B No No Yes ToDo No No No D A+ A+ B D No Leaked 2 0 0
autistici.org ToDo ToDo ToDo 93% X B B B No No Yes ToDo No No No C A A B B No Leaked 0 0 0
systemausfall.org ToDo ToDo ToDo 69% A A X No TLS No Yes No ToDo No No No B A+ A+ A+ A No No 1 0 0 Hostname Mismatch on MX
aikq.de ToDo ToDo ToDo 66% B B B B No No Syntax error ToDo No No No D A+ A+ C D No Leaked 1 7 3 Hostname Mismatch on mx20.aikq.de
virginmedia.com ToDo ToDo ToDo 66% C C C F No No Yes ToDo Yes No No F A B B D No Leaked 33 64 32
pobox.com ToDo ToDo ToDo 91% C C C Timeout No No Yes ToDo No No No F A A B F No Leaked 4 3 2
strato.de ToDo ToDo ToDo 66% C C C F No No No ToDo No No No F A+ A+ C F No Leaked 14 15 10
mail.ru ToDo ToDo ToDo 78% Timeout F F Timeout No No Yes ToDo Yes No No C+ A+ A C A No Leaked 38 98 39
countermail.com ToDo ToDo ToDo 96% F X F B No No Yes ToDo No No No C+ C B B D Yes Leaked 0 0 0
biomail.de ToDo ToDo ToDo 60% A A ToDo ToDo No No No ToDo No No No F A A C F No Leaked 0 0 0
greensta.de ToDo ToDo ToDo 91% B B F B No No No ToDo No No No F A A+ B F No Leaked 6 2 1
yahoo.com ToDo ToDo ToDo 91% C C C Timeout No No Yes ToDo Yes No Yes F A A+ C D No Partially 13 133 15
unseen.is ToDo ToDo ToDo 93% C C F F No No Yes ToDo No No No C+ A+ A+ A+ D Yes Leaked 0 0 0
1984.is ToDo ToDo ToDo 91% F F Timeout Timeout No No Yes ToDo No No No C- A+ A+ B B No Leaked 3 0 0
vodafone.de ToDo ToDo ToDo 83% F Timeout Timeout F No No Yes ToDo No No No D B C C D No Leaked 36 90 40
cryptix.de ToDo ToDo ToDo 68% M M M C No No No ToDo No No No F C A B D No Leaked 3 0 0
aktivix.org ToDo ToDo ToDo 89% F F X Timeout No No Yes ToDo No No No F A+ A+ A+ F No Leaked 2 0 0
neomailbox.com ToDo ToDo ToDo 79% C F F Timeout No No Yes ToDo No No No F A B A F No Leaked 0 0 0
goneo.de ToDo ToDo ToDo 66% F F C C No No No ToDo No No No D A+ A C D No Leaked 14 16 10
bluewin.ch ToDo ToDo ToDo 91% F F C C No No Yes ToDo No No No F A A+ B F No Leaked 43 161 44
artikel-140.nl ToDo ToDo ToDo 86% F X A No TLS No No Yes ToDo Yes No No D+ A+ A+ A+ D No Leaked 2 0 0
free.de ToDo ToDo ToDo 93% F F A No TLS No No No ToDo No No No F B F F F No Leaked 0 0 0 greylister does not support TLS
inbox.com ToDo ToDo ToDo 78% C X F No TLS No No Yes ToDo No No No F B A C F No Leaked 11 9 5
one.com ToDo ToDo ToDo 91% F F F F No No Yes ToDo No No No C- A+ A+ B D No Leaked 21 52 20
safe-mail.net ToDo ToDo ToDo 61% ? ? ? No TLS No No Syntax Error ToDo No No No F B A F F No Leaked 0 0 0
islandnet.com ToDo ToDo ToDo 58% F F F Timeout No No No ToDo No No No F B A F F No Leaked 3 4 3
cox.net ToDo ToDo ToDo 90% F F F No TLS No No No ToDo No No No F No HTTPS B No HTTPS D No Leaked 180 350 112
teknik.io ToDo ToDo ToDo 86% F F F F No No Yes ToDo No No No A+ B A B A Yes Leaked 2 0 0
mc-free.com 3.0 / 5.0 0.0 / 5.0 1.0 / 5.0 61% ToDo ToDo ToDo ToDo ToDo No No No No No No F A A+ B F No Leaked 5 9 5
simbamail.de 3.0 / 5.0 0.0 / 5.0 1.0 / 5.0 ToDo ToDo ToDo ToDo No No No No No No No F A A+ B F No Leaked 1 8 7
rediffmail.com 3.0 / 5.0 4.5 / 5.0 3.5 / 5.0 78% ToDo ToDo ToDo ToDo No No Yes Yes Monitoring No No F F ToDo Timeout E No Leaked 5 8 5
anpa.de 3.0 / 5.0 3.0 / 5.0 1.0 / 5.0 48% B X B No TLS No No Yes No No No No F C C F F No Leaked 4 19 11 Hostname Mismatch
netcup.net/de ToDo ToDo ToDo 64% F F F F No No Yes ToDo No No No F A A B F No Leaked 2 0 0

To be clear: This list does not want to make any statement about the quality of the email providers or their services. It takes more than just encryption, to provide a secure and reliable email service.

Please send comments and contributions to: a2e7ff3a@dismail.de

If you have an account on one of the servers (with a missing MECSA score), it would be great if you could run a MECSA test and send me the ID of the result. Thank you!

Last update: 2018-08-02

Changes:

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