First of all, the most important understanding is that the tantric massage it is not a form of sexual service!

It is neither, as many imagine it to be, a treatment exclusively devoted to ‘correcting’, ‘improving’, or ‘treating’ one’s sexual organs, needs, treatment of emotional emergencies, or desires.
Tantra is always about upcharge, uplift yourself and never about discharge, wasting the valuable erotic energy.

Tantra massage is a professional massage that uses the erotic energies to achieve higher states of consciousness, which is why awareness and knowledge of Tantra are highly required.

The purpose of practicing and receiving tantric massage is to feel, to awaken, and to learn how to control all the energies in your physical body as well as in your subtle bodies.

On the first physical stage, the Tantric massage can be extremely effective in combating certain illnesses and devitalizing physical conditions.
For example, it is widely recognised as being able to help women with painful menstruation or menopause discomfort and those who face difficulties conceiving children because it unlocks subtle energetic channels.
It can also help those with impeded sexual performance and mental depression.
There are a few reasons for these problems, usually: blockages in the uterus, not sitting in the correct position during sexual intercourse, kidney and breathing problems, lack of sexual activity, frustration, and so on.
Tantric massage is also seen as one of many healing treatments in Ayurveda, Tao tradition, Shiatsu, Qigong, and so on, while in  a Tantric path, it’s merely seen as a practical method of controlling the amorous erotic energy at will and reaching the state of enlightenment.

In a subtle way, skilled tantric massage therapists use specific sensual touches, such as lightly running fingertips along the entire body, to awaken a dormant energy field within the body, combined with pressures to unblock the energetic channels in the body and ultimately direct the energy into higher states of consciousness according to everyone’s energetic level.
Tantric massage sets out to “unwrinkled” blocked energy throughout the body and also to awaken the Kundalini Shakti, the mythological energy that lies in rest at the base of the spine.

When the Kundalini Shakti rises from its restful state, it spreads out along the spine and precipitates healing throughout the body, aiming towards the supreme knowledge of oneself.
When awakened, this energy field unites in an ecstatic experience and allows trapped physical and mental pain to escape from the body.

During the massage, the therapist aligns own energies with the receiver in order to clean, unblock, amplify, and create a fluid energetic flux into the other.
The tantric experience takes place in an expansive way, crossing mental boundaries and filling your body with light, pure energy, and sometimes even orgasmic states.

Tantric massage is for a tantric masseur a sacred approach towards his union with the Supreme Consciousness/Shiva, God, The Source of Light, therefore it will always be given the time and space for this massage in a very sacred way.

You can easily recognise if you are in an ordinary place, aiming mainly to earn some money, if you receive a “tantric massage” that offers sexual services .
A tantric massage is an open door towards one’s soul and offers the possibility of entering into another realm of universal life’s purposes and understandings.
The tantra path is the path to YES to life, without compromises or deviating from the essential spiritual teachings. 
It is the perfect alchemy and balance of Yin and Yang, the outer and inner worlds, of HA (+,solar,masculine) and THA (-, lunar, feminine); therefore, Tantra is also a union with Yoga and has coexisted all along.

Here’s my favourite quote from the Kularnava Tantra Treaties that might help you understand the importance of practicing tantric massage and the value of entering into a tantric path:

“By using boring and difficult techniques, nobody can achieve perfection.
Perfection can be achieved easily through complete, controlled, and aware satisfaction of the desires.”