These 37 climate groups and environmental organisations have endorsed and support the Mass Mailout for Climate campaign. Together, they represent and reach 1,356,021 Australians:

1 Million Women
A Different Approach Community (ADAC)
A Grand Stand for Environment (AGSE)
ACF Melbourne NxNW
Adelaide School Strike 4 Climate
Australian Conservation Foundation
Australian Forests and Climate Alliance
Australian Religious Response to Climate Change (ARRCC)
Banyule Climate Action Network
Bayside Climate Crisis Action
Baw Baw Sustainability Network
Capricorn Conservation Council
Centre for Climate Safety
Clarence Climate Action
Climate and Health Alliance (CAHA)
Darebin Climate Action Now
Environment Victoria
Environmentally Concerned Citizens Orange
Extinction Rebellion Australia
Geelong Sustainability
Gloucester Transition Inc
Householders Protect Environment
Journeys for Climate Justice
Lighter Footprints
Nature Coast Marine Group
Outdoors People for Climate
Parramatta Climate Action Network
Queenscliff Climate Action Group
South East Region Con Alliance
Stop Adani Albury Wodonga
Sustainable Population Australia
Sustainable Population Australia WA Branch
Transition Australia
Vote Earth Now
Warrandyte Climate Action Now
Wondonga Albury Towards Climate
Yarra Climate Action Now