diff --git a/src/components/RegisterForm/index.tsx b/src/components/RegisterForm/index.tsx
index ea1c606..54223d0 100644
--- a/src/components/RegisterForm/index.tsx
+++ b/src/components/RegisterForm/index.tsx
@@ -76,53 +76,8 @@ const RegisterForm = ({ dispatch }: Props): JSX.Element => {
             toastError("Cet email est invalid ><")
             return
         }
-        if (firstname && lastname && email && mobile && !sending) {
-            if (potentialVolunteer) {
-                dispatch(
-                    fetchPostulantAdd({
-                        potential: true,
-                        firstname,
-                        lastname,
-                        email,
-                        mobile,
-                        howToContact,
-                        alreadyCame,
-                        firstMeeting,
-                        commentFirstMeeting: firstMeeting ? "" : commentFirstMeeting,
-                        comment,
-                    })
-                )
-            } else {
-                dispatch(
-                    fetchVolunteerPartialAdd({
-                        firstname,
-                        lastname,
-                        email,
-                        mobile,
-                        howToContact,
-                        canHelpBefore,
-                        pelMember,
-                    })
-                )
-                dispatch(
-                    fetchPostulantAdd({
-                        potential: false,
-                        firstname,
-                        lastname,
-                        email,
-                        mobile,
-                        howToContact,
-                        alreadyCame,
-                        firstMeeting,
-                        commentFirstMeeting: firstMeeting ? "" : commentFirstMeeting,
-                        comment,
-                    })
-                )
-            }
-
-            setSending(true)
-        } else {
-            toast.warning("Il faut remplir les queques infos sur toi ><", {
+        if (!firstname || !lastname || !email || !mobile || sending) {
+            toast.warning("Il faut remplir les quelques infos sur toi ><", {
                 position: "top-center",
                 autoClose: 6000,
                 hideProgressBar: true,
@@ -131,33 +86,95 @@ const RegisterForm = ({ dispatch }: Props): JSX.Element => {
                 draggable: true,
                 progress: undefined,
             })
+            return
         }
+
+        if (potentialVolunteer) {
+            dispatch(
+                fetchPostulantAdd({
+                    potential: true,
+                    firstname,
+                    lastname,
+                    email,
+                    mobile,
+                    howToContact,
+                    alreadyCame,
+                    firstMeeting,
+                    commentFirstMeeting: firstMeeting ? "" : commentFirstMeeting,
+                    comment,
+                })
+            )
+        } else {
+            dispatch(
+                fetchVolunteerPartialAdd({
+                    firstname,
+                    lastname,
+                    email,
+                    mobile,
+                    howToContact,
+                    canHelpBefore,
+                    pelMember,
+                })
+            )
+            dispatch(
+                fetchPostulantAdd({
+                    potential: false,
+                    firstname,
+                    lastname,
+                    email,
+                    mobile,
+                    howToContact,
+                    alreadyCame,
+                    firstMeeting,
+                    commentFirstMeeting: firstMeeting ? "" : commentFirstMeeting,
+                    comment,
+                })
+            )
+        }
+
+        setSending(true)
     }
 
-    const { error, entities: postulant } = useSelector(
+    const { error: postulantError, entities: postulant } = useSelector(
         (state: AppState) => state.postulantAdd,
         shallowEqual
     )
 
+    const { error: volunteerError, entities: volunteer } = useSelector(
+        (state: AppState) => state.volunteerAdd,
+        shallowEqual
+    )
+
     let sendSuccess
-    if (!_.isEmpty(postulant)) {
+    let sendError
+    let sendingElement
+    if (
+        !postulantError &&
+        !_.isEmpty(postulant) &&
+        (potentialVolunteer || (!volunteerError && !_.isEmpty(volunteer)))
+    ) {
         if (sending) {
             setSending(false)
         }
         sendSuccess = <span className={styles.success}>Formulaire envoyé !</span>
-    }
-
-    let sendError
-    if (error && _.isEmpty(postulant)) {
+    } else if (postulantError && _.isEmpty(postulant)) {
         if (sending) {
             setSending(false)
         }
-        sendError = <span className={styles.error}>{error}</span>
-    }
-
-    let sendingElement
-    if (sending) {
-        sendingElement = <span className={styles.sending}>Envoi en cours...</span>
+        sendError = <span className={styles.error}>{postulantError}</span>
+    } else if (volunteerError && _.isEmpty(volunteer)) {
+        if (sending) {
+            setSending(false)
+        }
+        sendError = <span className={styles.error}>{volunteerError}</span>
+    } else if (sending) {
+        sendingElement = (
+            <span className={styles.sending}>
+                Envoi en cours...
+                <br />
+                En cas de problème, écrire à contact@parisestludique.fr
+            </span>
+        )
     }
 
     const intro = (
diff --git a/src/server/gsheets/accessors.ts b/src/server/gsheets/accessors.ts
index 1109c43..8b51ab2 100644
--- a/src/server/gsheets/accessors.ts
+++ b/src/server/gsheets/accessors.ts
@@ -604,7 +604,7 @@ async function tryNTimes<T>(
         return await func()
     } catch (e: any) {
         console.error(e?.error || e?.message || e)
-        console.error(`${repeatCount} attemps left every ${delayBetweenAttempts}`)
+        console.error(`${repeatCount} attempts left every ${delayBetweenAttempts}`)
         await new Promise<void>((resolve) => {
             setTimeout(() => resolve(), delayBetweenAttempts)
         })
diff --git a/src/server/gsheets/volunteers.ts b/src/server/gsheets/volunteers.ts
index 171bfa5..e31ef76 100644
--- a/src/server/gsheets/volunteers.ts
+++ b/src/server/gsheets/volunteers.ts
@@ -12,7 +12,6 @@ import {
     translationVolunteer,
     VolunteerDayWishes,
     VolunteerParticipationDetails,
-    VolunteerPartialAddReturn,
 } from "../../services/volunteers"
 import { canonicalEmail, canonicalMobile, trim, validMobile } from "../../utils/standardization"
 import { getJwt } from "../secure"
@@ -31,7 +30,9 @@ export const volunteerPartialAdd = expressAccessor.add(async (list, body) => {
     const params = body[0]
     const volunteer = getByEmail(list, params.email)
     if (volunteer) {
-        throw Error("Il y a déjà un bénévole avec cet email")
+        throw Error(
+            "Il y a déjà un bénévole avec cet email. Mieux vaut redemander un mot de passe si tu l'as oublié."
+        )
     }
     if (!validMobile(params.mobile)) {
         throw Error("Numéro de téléphone invalide, contacter pierre.scelles@gmail.com")
@@ -54,14 +55,31 @@ export const volunteerPartialAdd = expressAccessor.add(async (list, body) => {
         password2: passwordHash,
     })
 
+    await sendSignUpEmail(newVolunteer.email, password)
+
     return {
         toDatabase: newVolunteer,
-        toCaller: {
-            password,
-        } as VolunteerPartialAddReturn,
+        toCaller: {},
     }
 })
 
+async function sendSignUpEmail(email: string, password: string): Promise<void> {
+    const apiKey = process.env.SENDGRID_API_KEY || ""
+    if (__DEV__ || apiKey === "") {
+        console.error(`Fake sending signup email to ${email} with password ${password}`)
+    } else {
+        sgMail.setApiKey(apiKey)
+        const msg = {
+            to: email,
+            from: "contact@parisestludique.fr",
+            subject: "Accès au site des bénévoles de Paris est Ludique",
+            text: `Ton inscription est bien enregistrée, l'aventure PeL peut commencer ! :)\nVoici ton mot de passe pour accéder au site des bénévoles où tu t'es inscrit.e : ${password}\nTu y trouveras notamment comment on communique entre bénévoles.\nBonne journée !\nPierre`,
+            html: `Ton inscription est bien enregistrée, l'aventure PeL peut commencer ! :)<br />Voici ton mot de passe pour accéder au <a href="https://fo.parisestludique.fr/">site des bénévoles</a> : <strong>${password}</strong><br />Tu y trouveras notamment comment on communique entre bénévoles.<br />Bonne journée !<br />Pierre`,
+        }
+        await sgMail.send(msg)
+    }
+}
+
 export const volunteerLogin = expressAccessor.get<VolunteerLogin>(async (list, bodyArray) => {
     const [body] = bodyArray
     const volunteer = getByEmail(list, body.email)
diff --git a/src/services/accessors.ts b/src/services/accessors.ts
index d256ae7..e11579b 100644
--- a/src/services/accessors.ts
+++ b/src/services/accessors.ts
@@ -30,6 +30,9 @@ export default class ServiceAccessors<
                     ...axiosConfig,
                     params: { id },
                 })
+                if (data.error) {
+                    throw Error(data.error)
+                }
                 return { data }
             } catch (error) {
                 return { error: error as Error }
@@ -51,6 +54,9 @@ export default class ServiceAccessors<
                     `${config.API_URL}/${this.elementName}ListGet`,
                     axiosConfig
                 )
+                if (data.error) {
+                    throw Error(data.error)
+                }
                 return { data }
             } catch (error) {
                 return { error: error as Error }
@@ -100,6 +106,9 @@ export default class ServiceAccessors<
                     volunteerWithoutId,
                     axiosConfig
                 )
+                if (data.error) {
+                    throw Error(data.error)
+                }
                 return { data }
             } catch (error) {
                 return { error: error as Error }
@@ -122,6 +131,9 @@ export default class ServiceAccessors<
                     volunteer,
                     axiosConfig
                 )
+                if (data.error) {
+                    throw Error(data.error)
+                }
                 return { data }
             } catch (error) {
                 return { error: error as Error }
@@ -143,6 +155,9 @@ export default class ServiceAccessors<
                     `${config.API_URL}/${this.elementName}CountGet`,
                     axiosConfig
                 )
+                if (data.error) {
+                    throw Error(data.error)
+                }
                 return { data }
             } catch (error) {
                 return { error: error as Error }
diff --git a/src/services/volunteers.ts b/src/services/volunteers.ts
index 83b97c1..332f8df 100644
--- a/src/services/volunteers.ts
+++ b/src/services/volunteers.ts
@@ -24,7 +24,7 @@ export class Volunteer implements VolunteerPartial {
 
     dayWishesComment = ""
 
-    tshirtCount = ""
+    tshirtCount = 0
 
     tshirtSize = ""
 
@@ -92,12 +92,6 @@ export class VolunteerPartial {
     mobile = ""
 }
 
-export class VolunteerPartialAddReturn {
-    id = 0
-
-    password = ""
-}
-
 export const elementName = "Volunteer"
 
 export const volunteerExample: Volunteer = {
@@ -113,7 +107,7 @@ export const volunteerExample: Volunteer = {
     discordId: "",
     dayWishes: [],
     dayWishesComment: "",
-    tshirtCount: "1",
+    tshirtCount: 1,
     tshirtSize: "Femme M",
     food: "Végétarien",
     teamWishes: [],
diff --git a/src/store/postulantAdd.ts b/src/store/postulantAdd.ts
index 64399fa..f576a5c 100644
--- a/src/store/postulantAdd.ts
+++ b/src/store/postulantAdd.ts
@@ -7,7 +7,7 @@ import { postulantAdd } from "../services/postulantsAccessors"
 const postulantAdapter = createEntityAdapter<Postulant>()
 
 const postulantAddSlice = createSlice({
-    name: "addPostulant",
+    name: "postulantAdd",
     initialState: postulantAdapter.getInitialState({
         readyStatus: "idle",
     } as StateRequest),
@@ -17,7 +17,7 @@ const postulantAddSlice = createSlice({
         },
         getSuccess: (state, { payload }: PayloadAction<Postulant>) => {
             state.readyStatus = "success"
-            postulantAdapter.addOne(state, payload)
+            postulantAdapter.setOne(state, payload)
         },
         getFailure: (state, { payload }: PayloadAction<string>) => {
             state.readyStatus = "failure"
diff --git a/src/store/volunteerPartialAdd.ts b/src/store/volunteerPartialAdd.ts
index d11e935..a26ef63 100644
--- a/src/store/volunteerPartialAdd.ts
+++ b/src/store/volunteerPartialAdd.ts
@@ -7,7 +7,7 @@ import { volunteerPartialAdd } from "../services/volunteersAccessors"
 const volunteerAdapter = createEntityAdapter<Volunteer>()
 
 const volunteerPartialAddSlice = createSlice({
-    name: "addVolunteer",
+    name: "volunteerAdd",
     initialState: volunteerAdapter.getInitialState({
         readyStatus: "idle",
     } as StateRequest),
@@ -17,7 +17,7 @@ const volunteerPartialAddSlice = createSlice({
         },
         getSuccess: (state, { payload }: PayloadAction<Volunteer>) => {
             state.readyStatus = "success"
-            volunteerAdapter.addOne(state, payload)
+            volunteerAdapter.setOne(state, payload)
         },
         getFailure: (state, { payload }: PayloadAction<string>) => {
             state.readyStatus = "failure"
diff --git a/src/store/wishAdd.ts b/src/store/wishAdd.ts
index d8440e8..6845d7f 100644
--- a/src/store/wishAdd.ts
+++ b/src/store/wishAdd.ts
@@ -7,7 +7,7 @@ import { wishAdd } from "../services/wishesAccessors"
 const wishAdapter = createEntityAdapter<Wish>()
 
 const wishAddSlice = createSlice({
-    name: "addWish",
+    name: "wishAdd",
     initialState: wishAdapter.getInitialState({
         readyStatus: "idle",
     } as StateRequest),
diff --git a/src/store/wishList.ts b/src/store/wishList.ts
index 23ce147..fbb42ae 100644
--- a/src/store/wishList.ts
+++ b/src/store/wishList.ts
@@ -8,7 +8,7 @@ import { wishListGet } from "../services/wishesAccessors"
 const wishAdapter = createEntityAdapter<Wish>()
 
 const wishList = createSlice({
-    name: "getWishList",
+    name: "wishList",
     initialState: wishAdapter.getInitialState({
         readyStatus: "idle",
     } as StateRequest),