<dependency>
  <groupId>taglibs</groupId>
  <artifactId>mailer</artifactId>
  <version>1.1</version>
</dependency>

implementation 'taglibs:mailer:1.1'

implementation("taglibs:mailer:1.1")

libraryDependencies += "taglibs" % "mailer" % "1.1"

@Grapes(
  @Grab(group='taglibs', module='mailer', version='1.1')
)

<dependency org="taglibs" name="mailer" rev="1.1" />

[taglibs/mailer "1.1"]

'taglibs:mailer:jar:1.1'