LetterRx

We worked with the team behind LetterRx to build a web application that solves a very specific (and very painful) problem: sending personalized emails to residency programs at scale.

If you’ve ever gone through the residency application process, you already know—it’s intense.

One part that doesn’t get talked about enough is outreach. Applicants often end up emailing dozens (sometimes hundreds) of program directors. And these aren’t emails you can just copy-paste.

They need to be:

• Thoughtful
• Personalized
• Professional

So what happens?

People spend hours - sometimes days - writing and rewriting emails instead of focusing on interviews, studying, or actually preparing for the next step in their career.

The idea behind LetterRx was simple:

What if you could write high-quality, personalized emails… without starting from scratch every time?

Not generic templates. Not spammy automation.
Something that actually sounds like you, but saves you a ton of time.

So what did we build?

We partnered with the LetterRx team to design and build the full product from the ground up.

At its core, the platform is straightforward:

• You upload your list of programs
• Add your background and details
• The platform generates personalized emails for each program
• You review, tweak if needed, and send

Behind the scenes, though, there’s a lot going on.

We built:

• A system that generates program-specific emails, not just templates
• A workflow that keeps everything organized in one place
• A clean, simple interface (because users are already stressed enough)
• Infrastructure that can handle usage spikes during application season

The goal was always the same: make this feel easy.

Once LetterRx launched, the biggest feedback was honestly what we expected:

“I wish I had this earlier.”

Applicants went from spending hours writing emails to generating them in minutes.

That meant:

• Less time stuck on outreach
• More time preparing for interviews
• Better, more consistent communication

And because the emails are tailored, they don’t feel automated—which is the whole point.

This one was fun to build!

LetterRx was one of those cases where:

• The problem is very real
• The users are under pressure
• And a good solution genuinely makes their lives easier

Those are always the best kinds of products to work on.

If you’re thinking about building something like this—a real product, not just a landing page—we can help.

Our Development Subscription is designed exactly for this:
we scope it with you, build it, and keep moving until it’s live.