1 Runtime Dependency

Gem Required version
mime-types 2.99.3 < 3 >= 1.16

4 Development Dependencies

Gem Required version
bundler 4.0.22 >= 1.0.3
rake 13.4.2 > 0.8.7
rdoc 8.1.0 >= 0
rspec 2.12.0 ~> 2.12.0

Reverse Dependencies

Gem Version
actionmailer +783 Million Downloads 8.1.4

Sep 24, 2026

actionmailbox +454 Million Downloads 8.1.4

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letter_opener +122 Million Downloads 1.10.0

Mar 30, 2024

savon +103 Million Downloads 2.17.5

Sep 09, 2026

openid_connect +77.7 Million Downloads 2.5.0

Jun 03, 2026

email_spec +74 Million Downloads 2.3.1

Mar 21, 2026

validate_email +54.4 Million Downloads 0.1.6

Jul 12, 2012

valid_email +46.9 Million Downloads 0.2.1

Mar 16, 2024

gitlab-mail_room +35.6 Million Downloads 1.1.0

Jun 18, 2026

roda +21.9 Million Downloads 3.108.0

Sep 14, 2026

See all reverse dependencies