Whenever the “Assignee Groups” field is set/changed, everyone in that group gets an email.

[Saji Sasi]

Groups will not get email notification, but whenever Assignee Groups field assigned to any groups, the users should get notified about the ticket.

which is the better option or I need suggestions.

[Arkadiusz Wroblewski]

Hello and Welcome @Saji Sasi 

Please narrow more precisely your Use Case that we can help you better.

[Saji Sasi]

Hi @Arkadiusz Wroblewski while creating a work/issue type, we have a field to assign groups, so that in that groups the users will work on it, like (support groups, three members are there, if someone raise a ticket and mentioned support group in the assignee group field, users should get notified).  I need to do automation setup for this.  Hope u got it

[Arkadiusz Wroblewski]

@Saji Sasi 

It depends on the field type, yep, but the approach is generally the same.

1. trigger on Field value changed
2. check the Assignee Groups field
3. then send a customized email / notification to that group

[Saji Sasi]

@Arkadiusz Wroblewski groups does have mail recipients.  As u said, will this rule trigger the users in the groups??

[Saji Sasi]

**does not have

[Arkadiusz Wroblewski]

@Saji Sasi 

If you configured that right then yes.