Opt-in

Opt-in email - mechanism whereby one party verifies the purported identity of another party. Article “Opt-in” in Portuguese Wikipedia has 4.1 points for quality (as of July 1, 2025). The article contains 0 references and 3 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 0.21 points.

This article has the best quality in German Wikipedia. However, the most popular language version of this article is English.

Since the creation of article “Opt-in”, its content was written by 12 registered users of Portuguese Wikipedia and edited by 269 registered Wikipedia users in all languages.

The article is cited 8 times in Portuguese Wikipedia and cited 269 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Portuguese): #4597 in October 2008
• Global: #33253 in April 2003

The highest popularity rank from 2008:

• Local (Portuguese): #37258 in February 2012
• Global: #49228 in December 2008

There are 8 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	German (de) Opt-in		36.3531
2	English (en) Opt-in email		24.0598
3	Swedish (sv) Opt-in		22.2707
4	French (fr) Opt in		16.3788
5	Japanese (ja) オプトイン		15.487
6	Portuguese (pt) Opt-in		4.065
7	Dutch (nl) Opt-insysteem		3.7355
8	Korean (ko) 옵트인		2.0229

More...

The following table shows the most popular language versions of the article.

The most popular language versions of the article "Opt-in" in all the time

#	Language	Popularity award	Relative popularity
1	German (de) Opt-in		1 119 709
2	English (en) Opt-in email		912 899
3	French (fr) Opt in		344 062
4	Dutch (nl) Opt-insysteem		155 522
5	Portuguese (pt) Opt-in		85 743
6	Korean (ko) 옵트인		47 593
7	Japanese (ja) オプトイン		28 774
8	Swedish (sv) Opt-in		9 373

More...

The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "Opt-in" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Opt-in email		1 706
2	German (de) Opt-in		921
3	Japanese (ja) オプトイン		432
4	French (fr) Opt in		385
5	Korean (ko) 옵트인		134
6	Portuguese (pt) Opt-in		101
7	Dutch (nl) Opt-insysteem		68
8	Swedish (sv) Opt-in		29

More...

The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "Opt-in" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	German (de) Opt-in		108
2	English (en) Opt-in email		76
3	French (fr) Opt in		37
4	Dutch (nl) Opt-insysteem		24
5	Portuguese (pt) Opt-in		12
6	Swedish (sv) Opt-in		5
7	Japanese (ja) オプトイン		4
8	Korean (ko) 옵트인		3

More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "Opt-in" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	English (en) Opt-in email		1
2	German (de) Opt-in		0
3	French (fr) Opt in		0
4	Japanese (ja) オプトイン		0
5	Korean (ko) 옵트인		0
6	Dutch (nl) Opt-insysteem		0
7	Portuguese (pt) Opt-in		0
8	Swedish (sv) Opt-in		0

More...

The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "Opt-in" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	French (fr) Opt in		89
2	German (de) Opt-in		67
3	English (en) Opt-in email		50
4	Japanese (ja) オプトイン		23
5	Dutch (nl) Opt-insysteem		14
6	Swedish (sv) Opt-in		10
7	Korean (ko) 옵트인		8
8	Portuguese (pt) Opt-in		8

More...

#	Language	Value
de	German Opt-in
en	English Opt-in email
fr	French Opt in
ja	Japanese オプトイン
ko	Korean 옵트인
nl	Dutch Opt-insysteem
pt	Portuguese Opt-in
sv	Swedish Opt-in

Best Rank

Portuguese: #37258 02.2012

Global: #49228 12.2008

Best Rank

Portuguese: #4597 10.2008

Global: #33253 04.2003

On 28 January 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2025–26 UEFA Champions League, Nipah virus, Doomsday Clock, UEFA Champions League, Elena Rybakina, Donald Trump, 2026 European Men's Handball Championship, killing of Alex Pretti, Kristi Noem, deaths in 2026.

In Portuguese Wikipedia the most popular articles on that day were: Lucas Paquetá, Vírus Nipah, Nilton César, Gerardo Renault, Campeonato Brasileiro de Futebol de 2026 - Série B, Fernando Mamede, António José Seguro, Big Brother Brasil 26, Trace Brasil, Relógio do Juízo Final.

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information