diff --git a/src/bot.ts b/src/bot.ts
index fd47139..993b2c1 100644
--- a/src/bot.ts
+++ b/src/bot.ts
@@ -121,21 +121,25 @@ export class EpitlsBot {
 
 function message_command_response_sending_email(email: string) {
 	const embed = new EmbedBuilder()
-		.setTitle("`🟡`| Verification")
-		.setDescription(`Sending a verification link to your email \`${email}\`.`);
+		.setTitle("`🟡`| Vérification")
+		.setDescription(`
+Un lien de vérification a été envoyé par e-mail à \`${email}\`.
+Le lien expirera dans 5 minutes.
+**Il pourraît être arrivé dans \`Courrier indésirable\`.**
+`.trim());
 	return { embeds: [embed] };
 }
 
 function message_command_response_error(msg: string) {
 	const embed = new EmbedBuilder()
-		.setTitle("`❌`| Verification")
-		.setDescription(`An error occured\n\`${msg}\``);
+		.setTitle("`❌`| Vérification")
+		.setDescription(`Échec de la vérification :\n\`${msg}\``);
 	return { embeds: [embed] };
 }
 
 function message_command_response_success() {
 	const embed = new EmbedBuilder()
-		.setTitle("`✅`| Verification")
-		.setDescription("Your email was associated with this account.");
+		.setTitle("`✅`| Vérification")
+		.setDescription("Votre e-mail CRI a bien été associé à ce compte Discord.");
 	return { embeds: [embed] };
 }
diff --git a/src/cri.ts b/src/cri.ts
index a980044..5c0d8c9 100644
--- a/src/cri.ts
+++ b/src/cri.ts
@@ -1,9 +1,14 @@
 import { z } from "https://deno.land/x/zod@v3.22.4/mod.ts";
+import { log_from } from "./utils.ts";
+const log = (...args: unknown[]) => log_from(import.meta.url, ...args);
 
 /**
  * Wraps the CRI API.
  */
 export class CriApi {
+	/**
+	 * note : a CRI token is actually
+	 */
 	private token;
 
 	public constructor(token: string) {
@@ -14,13 +19,8 @@ export class CriApi {
 	 * Fetches an array of the groups an user has been part of.
 	 */
 	public async groups_of(login: string) {
-		const response = await fetch(`https://cri.epita.fr/api/v2/users/${login}/`, {
-			headers: {
-				accept: "application/json",
-				authorization: "Basic " + this.token,
-			},
-		});
-		const body = await response.json();
+		log(`Fetching groups of '${login}'.`);
+		const response = await fetch_json_auth(`https://cri.epita.fr/api/v2/users/${login}/`, this.token);
 		const group = z.object({ slug: z.string() });
 		const parser = z.object({
 			primary_group: group,
@@ -30,7 +30,7 @@ export class CriApi {
 			})),
 			current_groups: z.array(group),
 		});
-		const parsed = parser.parse(body);
+		const parsed = parser.parse(response);
 		const result = new Set<string>();
 		result.add(parsed.primary_group.slug);
 		for (const group of parsed.current_groups) result.add(group.slug);
@@ -42,12 +42,43 @@ export class CriApi {
 	 * Tests wether a given login exists within the CRI registry.
 	 */
 	public async user_exists(login: string) {
+		log(`Testing existence of user '${login}'.`);
 		const response = await fetch(`https://cri.epita.fr/api/v2/users/${login}/`, {
 			headers: {
 				accept: "application/json",
 				authorization: "Basic " + this.token,
 			},
 		});
-		return response.status === 200;
+		const found = response.status === 200;
+		return found;
+	}
+
+	public async get_all_groups() {
+		const result = [] as string[];
+		const response_parser = z.object({
+			next: z.string().or(z.null()),
+			results: z.array(z.object({
+				slug: z.string(),
+			})),
+		});
+		let next_url = `https://cri.epita.fr/api/v2/groups/`;
+		while (true) {
+			const response = await fetch_json_auth(next_url, this.token);
+			const parsed = response_parser.parse(response);
+			result.push(...parsed.results.map((g) => g.slug));
+			if (parsed.next === null) break;
+			next_url = parsed.next;
+		}
+		return result;
 	}
 }
+
+async function fetch_json_auth(url: string, token: string) {
+	const response = await fetch(url, {
+		headers: {
+			accept: "application/json",
+			authorization: "Basic " + token,
+		},
+	});
+	return await response.json() as unknown;
+}