  SNO+ is a large multipurpose experiment with the ultimate goal of searching
for the neutrinoless double beta decay in $^{130}\mathrm{Te}$. After a
commissioning phase with water as the target medium, during which acquired data
allowed for measurements of solar neutrinos and the detection of reactor
antineutrinos, SNO+ is now filled with 780 tonnes of liquid scintillator. The
higher light yield of the scintillator enhances the physics capabilities of the
experiment, and a physics program including reactor, geo and solar neutrinos is
currently underway. The water and unloaded scintillator phases provide crucial
commissioning milestones in preparation for the tellurium loading, such as
calibrating the detector and making extensive background constraint
measurements as components of the final scintillator cocktail are gradually
added. In a first phase, 3900~kg of natural tellurium (0.5%) will be added to
the scintillator for a predicted sensitivity of about $2\times20^{26}$ years
(90% CL) with 3 years of livetime. Higher tellurium loading will follow for
predicted sensitivities above $1\times10^{27}$ years (3% loading).
