Allah says: “But (he is) the Messenger of Allah and the seal of the Prophets and Allah has full knowledge of all things.” [Sûrah al-Ahzâb: 40]

It is one of the indisputable tenets of Islam that Muhammad (peace be upon him)is the last of Allah's Messengers and prophets. Allah says: “But (he is) the Messenger of Allah and the seal of the Prophets and Allah has full knowledge of all things” [Sûrah al-Ahzâb: 40].

The meaning of the "seal of the prophets" is that prophecy has been completed and concluded, and it will not exist any more until the Day of Judgment.

The verse says that there is no prophet after Muhammad (peace be upon him). it follows that there will be no messenger after him also, since being a Messenger is more exclusive and particular than being a prophet. It is known that every Messenger is a prophet but not every prophet is a Messenger. Al-Qâdî `Iyâd, said: “This is what most scholars maintain.” [al-Shifâ’ (1/347)]

There is considerable evidence that messengership is more particular than prophethood. Allah says to Muhammad (peace be upon him): “Therefore patiently persevere as did (all) messengers of firm resolution.” [Sûrah al-Ahqâf: 35]

Here, Allah has distinguished these messengers of firm resolution and ordered His Prophet Muhammad (peace be upon him) to follow their guidance. These messengers are, according to the strongest opinion, Nûh, Ibrâhîm, Mûsa, `Isa and Muahmmad (peace be upon them all). The description of them as messengers is more particular and indicates a higher level of perfection.

Abû Dharr asked Prophet Muhammad (peace be upon him) about the number of prophets. Prophet Muhammad (peace be upon him) said: “They were one hundred and twenty four thousand prophets, out of whom were three hundred and fifteen messengers.” [Musnad Ahmad]

There is considerable evidence in the Sunnah indicating that Muhammad (peace be upon him) is the final prophet.

The Prophet (peace be upon him) said: “The example of me with respect to the prophets before me is like that of a man who built a house and made if complete save one brick. People were looking at how nice the building was but were wondering about that brick. I am that brick and I am the last of the prophets.”

In a similar hadîth related in Târîkh Dimashq it reads: “I am the brick by which it is completed. The building is complete and the line of messengers has come to an end.” [refer to Al-Suyûtî, al-Jâmi` al-Kabîr]

The Prophet (peace be upon him) said: “I am Muhammad, I am Ahmad. I am al-Mâhî; by me Allah eliminates disbelief. I am al-Hâshir; upon my foot people will gather in the day of Judgment. And I am al-`Aqîb; there is no prophet after me.” [Sahîh al-Bukhârî and Sahîh Muslim]

The Prophet (peace be upon him) said: “There will be thirty liars among my people, each one claiming to be a prophet while I am the last prophet and there is no prophet after me.” [Sahîh Muslim]

The Prophet (peace be upon him) said: “I had been given preference over the other prophets by six tings: I was given the perfect form of speech. I have been assisted by dread being instilled in my enemies. Spoils of war were made legal for me. All the Earth was made a prayer place and a purifying place for me. I was sent to all humanity. And prophecy was sealed by me.” [Sahîh Muslim]

Ibn Kathîr said: “Allah tells us in His book what we are also told by the Prophet (peace be upon him) in his Sunnah – that there are no more prophets to be sent."

Therefore, people must know that anyone who today claims prophecy is misguided and a preacher of falsehood, regardless of what magic or trickery that person may use to support the claim.

Al-Qâdî `Iyâd said:
We declare it as unbelief for anyone to believe that there is another prophet after our Prophet Muhammad (peace be upon him), or who declares himself to be a prophet, or who claims that prophecy can be attained or reached by purifying the heart as has been alleged by some philosophers and extreme Sufis.

It is also unbelief for someone to claim that he receives revelation, even if he does not claim prophecy. All of these categories of people are speakers of falsehood who disbelieve in what was revealed to Muhammad (peace be upon him), because Prophet Muhammad (peace be upon him) clearly stated that he was the last prophet.
And Allah knows best.