if and when i receive information, i will let you know. vs if and when i received information, i will let you know.

Some examples from the web:

• When I receive information, it's masked by an encryption code.
• When I receive information, it's masked by an encryption code.
• I shall communicate the response to Members interested in the issue if and when I receive a reply.
• Yes, I will let you in this time.
• So, I will let you out of our agreement.
• I will let you know if and when we need more guns.
• Dickie, I swear, your actions jeopardize my plans in any way, I will let you swing for it.
• Next time, I will let you choose the poses you want.
• If we get out of here alive and we make it to our destination, I will let you go.
• If I find anything more, I will let you know.
• Now, as soon as I can figure out a way to move her off the investigation, I will let you know.
• Well, I will let you guys get back to your set list.
• And when I have curried favor with her, I will let you know.
• Fine, I will let you have it.
• When the time is right and the King can do no harm, I will let you have him.
• All right, Phoebe, I will let you have him.
• If you don't love the movie, I will let you give me the tattoo of your choice on my face.
• If I get a lead on your brother, I will let you know.
• Since she told them on her own, I will let you go this time.
• As soon as I have his head in a box, I will let you know.

Some examples from the web:

• Yes, I will let you in this time.
• So, I will let you out of our agreement.
• I will let you know if and when we need more guns.
• Dickie, I swear, your actions jeopardize my plans in any way, I will let you swing for it.
• Next time, I will let you choose the poses you want.
• If we get out of here alive and we make it to our destination, I will let you go.
• If I find anything more, I will let you know.
• Now, as soon as I can figure out a way to move her off the investigation, I will let you know.
• Well, I will let you guys get back to your set list.
• And when I have curried favor with her, I will let you know.
• Fine, I will let you have it.
• When the time is right and the King can do no harm, I will let you have him.
• All right, Phoebe, I will let you have him.
• If you don't love the movie, I will let you give me the tattoo of your choice on my face.
• If I get a lead on your brother, I will let you know.
• Since she told them on her own, I will let you go this time.
• As soon as I have his head in a box, I will let you know.
• Since I am an elder, I will let you go thinking of you as a kid.
• If you give me the code, I will let you out.
• Even so, I will let you pick the place.