Is dfn.de or Fastmail more popular?

Fastmail is used by more websites in our catalog: 109 use dfn.de and 1,580 use Fastmail.

Does dfn.de or Fastmail have higher-authority sites?

dfn.de sites have the higher median Ahrefs Domain Rating (dfn.de: 74, Fastmail: 38).

Is dfn.de or Fastmail growing faster?

Between 2026-06 and 2026-07, dfn.de went from 0.02% to 0.01% of all tracked sites, while Fastmail went from 0.22% to 0.18%. dfn.de is gaining ground faster in our index.

Can a site use both dfn.de and Fastmail?

No. A site runs a single email host, so dfn.de and Fastmail are mutually exclusive.

Where does this dfn.de vs Fastmail data come from?

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.

dfn.de vs Fastmail — Site Stats Database

dfn.de vs Fastmail

A side-by-side comparison of two email hosting providers, based on the 736,999 Email Host sites tracked by Site Stats Database.

Last updated July 1, 2026

Metric	dfn.de	Fastmail
Websites	109	1,580
Market share	0.01%	0.21%
Share of top 10K sites	0.00%	0.22%
Share of top 100K sites

Rank	#150	#29

Median DR	74	38

Average DR	73	39

Median keywords	766	1,068

Median referring domains	5,766	658

Median domain age	20 yrs	14 yrs

Average domain age	20 yrs	14 yrs

Average monthly traffic	18,202	125,785

Combined monthly traffic	1,984,049	198,740,517

mpg.de
LanguageGerman
DR (Ahrefs)89
Total Keywords61,365
Referring Domains103,616
Domain Age
Traffic (Jun 2026)560,707
Traffic Trend
Technologydfn.de
astro4edu.org
LanguageEnglish
DR (Ahrefs)48
Total Keywords15,128
Referring Domains1,030
Domain Age6 yrs
Traffic (Jun 2026)262,741
Traffic Trend
Technology
smb.museum
LanguageGerman
DR (Ahrefs)81
Total Keywords4,741
Referring Domains20,447
Domain Age22 yrs
Traffic (Jun 2026)130,439
Traffic Trend
Technology
desy.de
LanguageGerman
DR (Ahrefs)77
Total Keywords7,742
Referring Domains11,479
Domain Age
Traffic (Jun 2026)107,045
Traffic Trend
Technologydfn.de
dwds.de
LanguageGerman
DR (Ahrefs)76
Total Keywords25,999
Referring Domains10,456
Domain Age
Traffic (Jun 2026)97,901
Traffic Trend
Technologydfn.de
dsmz.de
LanguageEnglish
DR (Ahrefs)72
Total Keywords7,492
Referring Domains3,431
Domain Age
Traffic (Jun 2026)63,362
Traffic Trend
Technologydfn.de
dblp.org
LanguageEnglish
DR (Ahrefs)80
Total Keywords11,991
Referring Domains15,607
Domain Age20 yrs
Traffic (Jun 2026)59,083
Traffic Trend
Technologydfn.de
tu.berlin
LanguageGerman
DR (Ahrefs)80
Total Keywords2,609
Referring Domains10,822
Domain Age11 yrs
Traffic (Jun 2026)41,952
Traffic Trend
Technologydfn.de
hhu.de
LanguageGerman
DR (Ahrefs)79
Total Keywords6,183
Referring Domains14,893
Domain Age
Traffic (Jun 2026)38,730
Traffic Trend
Technologydfn.de
mathunion.org
LanguageEnglish
DR (Ahrefs)73
Total Keywords1,789
Referring Domains5,409
Domain Age26 yrs
Traffic (Jun 2026)35,522
Traffic Trend
Technology

Website	Language	DR (Ahrefs)	Total Keywords	Referring Domains	Domain Age	Traffic (Jun 2026)	Traffic Trend	Technology
mpg.de	German	89	61,365	103,616		560,707		dfn.de

urbandictionary.com
LanguageEnglish
DR (Ahrefs)88
Total Keywords1,252,919
Referring Domains139,201
Domain Age24 yrs
Traffic (Jun 2026)28,367,727
Traffic Trend
TechnologyFastmail
calculateme.com
LanguageEnglish
DR (Ahrefs)53
Total Keywords412,950
Referring Domains3,492
Domain Age20 yrs
Traffic (Jun 2026)28,052,433
Traffic Trend
Technology
emojipedia.org
LanguageEnglish
DR (Ahrefs)91
Total Keywords168,107
Referring Domains60,163
Domain Age12 yrs
Traffic (Jun 2026)18,954,965
Traffic Trend
Technology
dollartimes.com
LanguageEnglish
DR (Ahrefs)58
Total Keywords391,068
Referring Domains4,550
Domain Age20 yrs
Traffic (Jun 2026)17,120,455
Traffic Trend
Technology
mybib.com
LanguageEnglish
DR (Ahrefs)59
Total Keywords22,140
Referring Domains2,474
Domain Age22 yrs
Traffic (Jun 2026)14,671,199
Traffic Trend
TechnologyFastmail
scryfall.com
LanguageEnglish
DR (Ahrefs)78
Total Keywords192,490
Referring Domains10,218
Domain Age9 yrs
Traffic (Jun 2026)7,562,956
Traffic Trend
Technology
dateful.com
LanguageEnglish
DR (Ahrefs)80
Total Keywords43,868
Referring Domains7,448
Domain Age10 yrs
Traffic (Jun 2026)4,880,206
Traffic Trend
Technology
simplemaps.com
LanguageEnglish
DR (Ahrefs)77
Total Keywords206,661
Referring Domains3,680
Domain Age27 yrs
Traffic (Jun 2026)4,851,597
Traffic Trend
Technology
newyorkjets.com
LanguageEnglish
DR (Ahrefs)72
Total Keywords104,000
Referring Domains10,999
Domain Age30 yrs
Traffic (Jun 2026)4,845,259
Traffic Trend
Technology
puppies.com
LanguageEnglish
DR (Ahrefs)69
Total Keywords168,625
Referring Domains1,713
Domain Age27 yrs
Traffic (Jun 2026)4,125,103
Traffic Trend
Technology