The Ruby Toolbox - Know your options!

letter_opener

2.78
When mail is sent from your application, Letter Opener will open a preview in the browser instead of sending.
 Popularity
Downloads
7,318,588
Stars
2,734
Forks
190
Watchers
33
 Releases
Total releases
13
First release
Latest release

mailcatcher

2.53
MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a web interface. Run mailcatcher, set your favourite app to deliver to smtp://127.0.0.1:1025 instead of your default SMTP server, then check out http://127.0.0.1:1080 to see the mail.
 Popularity
Downloads
2,850,082
Stars
4,178
Forks
417
Watchers
90
 Releases
Total releases
41
First release
Latest release

mail_view

0.89
Visual email testing
 Popularity
Downloads
1,194,802
Stars
1,372
Forks
135
Watchers
25
 Releases
Total releases
8
First release
Latest release

rails_email_preview

0.26
A Rails Engine to preview plain text and html email in your browser
 Popularity
Downloads
202,707
Stars
463
Forks
52
Watchers
15

sanitize_email

0.14
Email Condom for your Ruby Server. In Rails, Sinatra, et al, or simply the mail gem: Aids in development, testing, qa, and production troubleshooting of email issues without worrying that emails will get sent to actual live addresses.
 Popularity
Downloads
249,050
Stars
148
Forks
28
Watchers
9

post_office

0.03
A mock SMTP/POP3 server to aid in the development of applications with mail functionality.
 Popularity
Downloads
17,977
Stars
34
Forks
8
Watchers
1