Welcome to the ResidencyCAS Medical School Portal! ResidencyCAS is a single, comprehensive platform that streamlines and improves the residency application process for everyone.
The main function of the Medical School Portal is to allow you to send invitations (i.e., access links) for the ResidencyCAS application. These invitations should only go to students who graduated from your institution. Only applicants with an access link can apply to ResidencyCAS.
Note that the invitations you send from the Medical School Portal are generic. They are not linked to a residency or your institution.

US fourth-year students and graduates (MD or DO) are instructed to contact their medical school of graduation to obtain individual access links. However, Canadian medical graduates are instructed to contact CaRMS, and international medical graduates (IMGs) are instructed to contact ECFMG. Please contact these organizations if you have any questions about their processes.
Medical School Portal URL: https://medicalschools.residencycas.com/
If you do not already have an account, your institution manager must verify your need for access. This process ensures that only authorized individuals gain access to the portal, maintaining security and proper access control. The institution manager is typically the system administrator; if you’re not sure who your institution manager is, contact our support team, and we’ll help you identify this person.
If your institution manager verifies access, they should contact our support team with the following information:
Once we receive this email, we’ll create the account and grant portal access.
On May 11, 2026, we hosted the webinar, "ResidencyCAS: Medical School Portal Overview," which provided an overview of the ResidencyCAS Medical School Portal, the application process, and key features for the 2026-2027 residency cycle, along with practical insights from specialty leaders.
There are two primary areas you'll want to become familiar with:
When you first log in to the portal, you land on the dashboard. From here, you can search the applicants to whom you've sent access links.
You can also switch between cycles using the top menu.

When you click Individual Access Links, you'll see a list of applicants to whom you've sent access links (to send new access links, see below). From this page, you can:

Once you send emails in ResidencyCAS, you can track email statuses. See the table below for definitions. Some emails will remain indefinitely in a status of Sent or Delivered if the recipient's email server fails to process read receipts.
| Email Status | Definition |
|---|---|
| Bounced | The message was rejected by the recipient's email server; you should verify the recipient's email address. Contact the Client Support Specialist team at schoolsupport@residencycas.com for further assistance. |
| Clicked | The recipient received the message, opened it, and clicked a link or image. |
| Deferred | The message was not sent and is in the queue for redelivery. |
| Delivered | The recipient's email server received the message; however, this does not indicate that the applicant opened or viewed the message. The recipient may have recently changed their email address, or they may have rules or junk mail settings enabled that prevent the email from reaching the inbox. Applicants are encouraged to keep their contact information up to date and disable junk mail filters. |
| Dropped |
The email provider is preventing the delivery of the message. Messages are typically dropped when they contain an invalid or non-existent email address, or when the recipient marks a previous ResidencyCAS message as spam. Contact the Client Support Specialist team at schoolsupport@residencycas.com. Additionally, you may want to confirm with the recipient that you have the correct address and that they added donotreply@webadmit.org to their "safe senders" list. |
| Failed | The message was not sent. Contact the Client Support Specialist team at schoolsupport@residencycas.com for further assistance. |
| Opened | The recipient received the message and opened it. |
| Sent | The message is being processed for delivery to the recipient. |
| Spam Report | The recipient reported the email as spam. |
| Unknown | The status of the email can’t be determined. This status typically appears for recently sent emails and is replaced by another status within 24 hours. |
To send access links to potential ResidencyCAS applicants:

Some institutions may choose to authorize future applicants – such as third-year medical students (M3s), recent graduates, or others not actively applying this cycle – to access ResidencyCAS to request letters of evaluation or familiarize themselves with the system. For example, if an M3 wants to request an evaluation during their clinical rotation, you can send them an Individualized Access Link to grant early access to ResidencyCAS and allow them to request the evaluation while the experience is still fresh.
However, these individuals are not considered active applicants and should not submit their application during this period. When it comes time for them to formally apply, any previously submitted evaluations will carry over automatically. You’ll need to generate a new link for that application cycle, but once the student logs in, their prior evaluations will appear – unless any evaluation questions have changed between cycles. In that case, evaluators will need to re-submit the evaluation using the updated version so it appears in the application.
To help you identify and track future applicants, ResidencyCAS now includes a question in the application asking whether the applicant is applying for the current cycle or preparing for a future one. This information is visible in the Medical School Portal via the List and Export Managers, allowing for easy filtering and reporting.
From the Individual Access Links Page, you can review existing invites and resend them.
If you've sent an access link to an applicant more than once, you can review the invites you've sent by clicking Show in the History column.
To resend an invite:
Another email is sent to the applicant. Note that the access link remains unchanged when the same email address is used.
To see which medical schools have invited a student to interview:

This information appears in real time from the Interview Portal, as long as the applicant has opted in to the release question. You can also use this data when working with the List Manager and Export Manager.
Where available, you'll also have access to several other features on the Medical School Portal. These include:
I'm a faculty member and have received requests from several students to upload letters/evaluations for them. Previously, I forwarded these to the person in my department that does all uploads for us. How do I do this in CAS?
To allow someone else from your institution to upload letters/evaluations on your behalf, you must add them as a Delegate in the Liaison Letters Portal. Once added, any requests sent to you will also be sent to your designated delegates. Delegates can then log in to Liaison Letters and perform the upload. When your delegate performs the upload, your name will appear as the author to programs – the delegate’s name will not appear. You can add or deactivate delegates at any time.
I perform the uploading of letters/evaluations on behalf of the faculty and staff at my school. How do I do this in CAS?
Faculty members can add you as a Delegate in the Liaison Letters portal. Once added, any requests sent to that faculty member will also be sent to you. You can then log in to Liaison Letters and perform the upload. The faculty member’s name will appear as the author to programs – your name as the delegate will not appear.
I’m a student and I need to have a letter/evaluation written by my school. Who should I send this request to in CAS?
You should request letters/evaluations from the faculty member who will be the primary author of the letter. If that individual wants to involve others in the process or have someone else at the institution upload the letter for them, they can use the Delegate feature in the Liaison Letters portal. Regardless of who uploads the letter/evaluation, the individual you initially requested it from will appear as the author to programs.