diff --git a/setup.cfg b/setup.cfg
index 5f900e8a7c835130663c629b95bd0e105742df2b..40b6bcee056fbe223ab4876678c84c333b44c442 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -31,6 +31,12 @@ setup_requires =
 where = src
 include = stapa.*
 
+[options.package_data]
+stapa.mailsync.resources =
+    *.html
+    *.txt
+    *.pdf
+
 [options.entry_points]
 console_scripts =
     sync_stapa_all=stapa.mailsync.cli:sync
diff --git a/src/stapa/mailsync/cli.py b/src/stapa/mailsync/cli.py
index 56a9575e8b6f85e26e80bbb59bdb9da0b2283041..3142824b5c8673039bdb44ad7d0275969100f248 100644
--- a/src/stapa/mailsync/cli.py
+++ b/src/stapa/mailsync/cli.py
@@ -11,6 +11,7 @@ from zolfa.zauth.pasteur import PasteurEmail
 from .join_request_checker import fetch_join_requests
 from .mailinglist import MailingListManager
 from .utils import ask_confirm
+from .welcome_mail import WelcomeMailSender
 
 data_dir = Path(xdgappdirs.user_data_dir("stapa_mailsync"))
 members_backup_dir = data_dir / "backup_members"
@@ -79,7 +80,7 @@ def sync():
         return
     if not ask_confirm():
         return
-    
+
     add_results = ml.bulk_add(set(to_add['address']))
     ts = datetime.utcnow().isoformat(timespec='seconds')
     log_entry = {ts: add_results}
@@ -96,13 +97,21 @@ def sync():
     print('\nResults:\n')
     print(check_results.to_markdown())
 
-    print('\nPlease send welcome mail to:')
-    print("; ".join(check_results[check_results.state == 'ADDED'].address))
+    added_addresses = check_results[check_results.state == 'ADDED'].address
+    added_addresses = added_addresses.to_list()
+    print('\nSending welcome mail to:')
+    print("; ".join(added_addresses))
     print("")
 
     ts = datetime.utcnow().isoformat(timespec='seconds')
     members = ml.members()
     members.to_csv(members_backup_dir / f'{ts}.csv')
 
+    wms = WelcomeMailSender(args.username, password)
+    wms.send_mails(added_addresses)
+
+    print("Welcome emails sent!")
+
+
 if __name__ == '__main__':
     sync()
diff --git a/src/stapa/mailsync/resources/StaPaMailingList.pdf b/src/stapa/mailsync/resources/StaPaMailingList.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..97ac2631ae7bbc8de46f514d965694eaeff692b3
Binary files /dev/null and b/src/stapa/mailsync/resources/StaPaMailingList.pdf differ
diff --git a/src/stapa/mailsync/resources/welcome_mail.html b/src/stapa/mailsync/resources/welcome_mail.html
new file mode 100644
index 0000000000000000000000000000000000000000..55c569d6ce307991a5247755d366eae82df5ddde
--- /dev/null
+++ b/src/stapa/mailsync/resources/welcome_mail.html
@@ -0,0 +1,134 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta http-equiv="content-type" content="text/html; charset=">
+  </head>
+  <body dir="ltr">
+    <font size="5">🎉</font> <font style="font-size:18pt" size="5"> <b>Welcome to the StaPa mailing list!</b> </font>
+    <font style="font-size:18pt" size="5">🎉</font>
+    <div id="divtagdefaultwrapper" dir="ltr" style="font-size:12pt;font-family:Arial,serif">
+      <div>
+        <p style="line-height:100%; margin-top:0.49cm; margin-bottom:0.49cm"> You are receiving this email because you
+          asked to be added to the StaPa mailing list through our website: <font color="#0070c0"> <a
+              href="http://stapa.ovh/"><u>http://stapa.ovh</u></a> </font> and your request has now been successfully
+          processed! </p>
+        <p style="line-height:100%; margin-bottom:0.11cm"> Starting from now, you will be receiving in your inbox all
+          the messages that are exchanged on our list! </p>
+        <p style="line-height:100%; margin-bottom:0.11cm"> You are also welcome to participate and send emails directly
+          to the list, by sending your email to the address <a href="mailto:stapa-all@pasteur.fr"><font color="#0070c0">stapa-all@pasteur.fr</font></a>
+          <font color="#d05c12"><b> but please, take some time to read the following lines before doing so: </b></font>
+        </p>
+        <ul>
+          <li>
+            <p style="line-height:100%; margin-top:0.42cm; margin-bottom:0.42cm"> This is an open (unmoderated - for the
+              moment) mailing list. When you send an email to 'stapa-all@pasteur.fr' all the hundreds of subscribers
+              will receive your email, so use it wisely! For example: <b> if someone asks for help on the mailing list,
+                and you want to reply to that particular person <font color="#d05c12"> pretty pretty please
+                  double-check that you are not choosing the 'Reply to all' option! </font> </b> If you select 'Reply
+              to all' you will send your answer to all the subscribers! </p>
+          </li>
+          <li>
+            <p style="line-height:100%; margin-top:0.42cm; margin-bottom:0.42cm"> (At the moment) there is no defined
+              list of "allowed" topics, but common-sense rules still apply. You are welcome to send messages, requests
+              or useful information, but to keep this place useful and enjoyable, please, let's try to avoid
+              counterproductive messages and think twice before sending! </p>
+          </li>
+          <li>
+            <p style="line-height:100%; margin-top:0.42cm; margin-bottom:0.42cm"> <font style="font-size:16pt" size="3">
+                <b>Our priority is to keep this space a safe place for everyone,</b> </font> so we won't tolerate: any
+              form of hate speech or discrimination, any aggressive or abusive behavior, any kind of propaganda linked
+              to political parties. </p>
+          </li>
+        </ul>
+        <p style="line-height:100%; margin-top:0.53cm; margin-bottom:0.11cm"> Here you can find a (non-exhaustive) list
+          of topics that have always been well-received by the members of the mailing list: </p>
+        <ul>
+          <li>
+            <p style="line-height:100%; margin-top:0.49cm; margin-bottom:0cm"> <u>Science-related topics</u>, i.e.: </p>
+          </li>
+          <ul>
+            <li>
+              <p style="line-height:100%; margin-bottom:0cm"> Kindly ask your colleagues on campus if they can supply
+                small quantities of a reagent for an experiment you have to do (one of the main uses of the mailing list
+                until now) </p>
+            </li>
+            <li>
+              <p style="line-height:100%; margin-bottom:0cm"> Ask if someone on campus can give expertise/quick
+                suggestions on a topic you are working on (but, please, make sure to ask in your lab first, to avoid any
+                trouble! 😉) </p>
+            </li>
+          </ul>
+          <li>
+            <p style="line-height:100%; margin-bottom:0cm"> <u>Campus social life:</u> </p>
+          </li>
+          <ul>
+            <li>
+              <p style="line-height:100%; margin-bottom:0cm"> Cool events (scientific or not) happening on campus that
+                can be of general interest. </p>
+            </li>
+            <li>
+              <p style="line-height:100%; margin-bottom:0cm"> Activities organized by on-campus organizations </p>
+            </li>
+            <li>
+              <p style="line-height:100%; margin-bottom:0cm"> Proposals or discussion on topics that could be of general
+                interest. </p>
+            </li>
+          </ul>
+          <li>
+            <p style="line-height:100%; margin-bottom:0cm"> <u>Networking / job proposals / applications</u> </p>
+          </li>
+          <ul>
+            <li>
+              <p style="line-height:100%; margin-bottom:0cm"> Open positions </p>
+            </li>
+            <li>
+              <p style="line-height:100%; margin-bottom:0cm">Conferences</p>
+            </li>
+            <li>
+              <p style="line-height:100%; margin-bottom:0cm">...</p>
+            </li>
+          </ul>
+          <li>
+            <p style="line-height:100%; margin-bottom:0cm"> <u>Anything that could be of general interest</u> </p>
+          </li>
+        </ul>
+        <p style="line-height:100%; margin-top:0.99cm; margin-bottom:0.99cm"> Sometimes receiving all the StaPa emails
+          in your main inbox can be overwhelming. You may prefer to have them moved automatically in a dedicated folder.
+          To help you in this endeavor, please find attached a PDF guide and configure your Outlook accordingly, if you
+          wish to do so. <font color="#d05c12"> (However, don't forget to check that folder once in a while not to miss
+            out on the cool events we organize, like the weekly StaPa Social Time, every Friday at 18h00 in the 25). </font>
+        </p>
+        <p style="line-height:100%; margin-top:0.99cm; margin-bottom:0.99cm"> If you come across any specific issue or
+          problem that you want to bring to the attention of the StaPa Bureau, please don't refrain from contacting us
+          at <font color="#0000ff"> <u><a href="mailto:bureau-stapa@pasteur.fr" class="moz-txt-link-freetext">
+                bureau-stapa@pasteur.fr </a></u> </font>. </p>
+        <p style="line-height:100%; margin-bottom:0cm"> Thank you for joining the StaPa mailing list! </p>
+        <p style="line-height:100%; margin-bottom:1cm"> We hope to see you soon in one of our events 😁 </p>
+        <p style="line-height:100%; margin-bottom:0cm"> Cheers, </p>
+        <p style="line-height:100%; margin-bottom:2cm"> The StaPa Bureau </p>
+        <p style="line-height:100%; margin-bottom:0cm"> <u>Unsubscribe:</u> If at any time you want to quit the mailing
+          list and stop receiving the messages, you can do it yourself following these instructions (no need to ask): </p>
+        <ul>
+          <li>
+            <p style="line-height:100%; margin-bottom:0cm"> Access the Pasteur Webmail in your browser (<u><a
+                  href="https://email.pasteur.fr/" class="moz-txt-link-freetext">https://email.pasteur.fr</a></u>) </p>
+          </li>
+          <li>
+            <p style="line-height:100%; margin-bottom:0cm"> Click on the gear icon on the top-right corner, then select
+              Settings (FR: Options) </p>
+          </li>
+          <li>
+            <p style="line-height:100%; margin-bottom:0cm"> In the menu in the left pane find the section General -&gt;
+              Distribution Groups (FR: Groupes de Distribution) </p>
+          </li>
+          <li>
+            <p style="line-height:100%; margin-bottom:0cm"> Double click on stapa-all </p>
+          </li>
+          <li>
+            <p style="line-height:100%; margin-bottom:0cm">Click on Leave (FR: Quitter)</p>
+          </li>
+        </ul>
+      </div>
+    </div>
+  </body>
+</html>
diff --git a/src/stapa/mailsync/resources/welcome_mail.txt b/src/stapa/mailsync/resources/welcome_mail.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5cc7a1304834689cbc5a3da95aa265f5569d1188
--- /dev/null
+++ b/src/stapa/mailsync/resources/welcome_mail.txt
@@ -0,0 +1,100 @@
+  *Welcome to the StaPa mailing list!*
+
+You are receiving this email because you asked to be added to the StaPa
+mailing list through our website: http://stapa.ovh/, and your request has
+now been successfully processed!
+
+Starting from now, you will be receiving in your inbox all the messages
+that are exchanged on our list!
+
+You are also welcome to participate and send emails directly to the
+list, by sending your email to the address stapa-all@pasteur.fr
+*but please, take some time to read the following lines before doing so*:
+
+  - This is an open (unmoderated - for the moment) mailing list. When
+    you send an email to 'stapa-all@pasteur.fr' all the hundreds of
+    subscribers will receive your email, so use it wisely! For example:
+    *if someone asks for help on the mailing list, and you want to reply
+    to that particular person pretty pretty please double-check that you
+    are not choosing the 'Reply to all' option!* If you select 'Reply
+    to all' you will send your answer to all the subscribers!
+
+  - (At the moment) there is no defined list of "allowed" topics, but
+    common-sense rules still apply. You are welcome to send messages,
+    requests or useful information, but to keep this place useful and
+    enjoyable, please, let's try to avoid counterproductive messages and
+    think twice before sending!
+
+  - *Our priority is to keep this space a safe place for everyone,* so
+    we won't tolerate: any form of hate speech or discrimination, any
+    aggressive or abusive behavior, any kind of propaganda linked to
+    political parties.
+
+Here you can find a (non-exhaustive) list of topics that have always=20
+been well-received by the members of the mailing list:
+
+  - _Science-related topics_, i.e.:
+
+     + Kindly ask your colleagues on campus if they can supply small
+       quantities of a reagent for an experiment you have to do (one of
+       the main uses of the mailing list until now)
+     
+     + Ask if someone on campus can give expertise/quick suggestions on
+       a topic you are working on (but, please, make sure to ask in
+       your lab first, to avoid any trouble! =F0=9F=98=89)
+
+  - _Campus social life:_
+
+     + Cool events (scientific or not) happening on campus that can be
+       of general interest.
+
+     + Activities organized by on-campus organizations
+
+     + Proposals or discussion on topics that could be of general
+       interest.
+
+  - _Networking / job proposals / applications_
+
+     + Open positions
+
+     + Conferences
+
+     + ...
+
+  - _Anything that could be of general interest_
+
+Sometimes receiving all the StaPa emails in your main inbox can be
+overwhelming. You may prefer to have them moved automatically in a
+dedicated folder. To help you in this endeavor, please find attached a
+PDF guide and configure your Outlook accordingly, if you wish to do so.
+(However, don't forget to check that folder once in a while not to miss
+out on the cool events we organize, like the weekly StaPa Social Time,
+every Friday at 18h00 in the 25).
+
+If you come across any specific issue or problem that you want to bring
+to the attention of the StaPa Bureau, please don't refrain from
+contacting us at: bureau-stapa@pasteur.fr
+
+Thank you for joining the StaPa mailing list!
+
+We hope to see you soon in one of our events :)
+
+Cheers,
+
+The StaPa Bureau
+
+_Unsubscribe:_ If at any time you want to quit the mailing list and stop=20
+receiving the messages, you can do it yourself following these=20
+instructions (no need to ask):
+
+  - Access the Pasteur Webmail in your browser (https://email.pasteur.fr)
+
+  - Click on the gear icon on the top-right corner, then select Settings
+    (FR: Options)
+
+  - In the menu in the left pane find the section General ->
+    Distribution Groups (FR: Groupes de Distribution)
+
+  - Double click on stapa-all
+
+  - Click on Leave (FR: Quitter)
diff --git a/src/stapa/mailsync/welcome_mail.py b/src/stapa/mailsync/welcome_mail.py
new file mode 100644
index 0000000000000000000000000000000000000000..9055b0be035bcc14846a967dee2b15290ea496ea
--- /dev/null
+++ b/src/stapa/mailsync/welcome_mail.py
@@ -0,0 +1,53 @@
+import pkgutil
+from smtplib import SMTP
+from email.mime.multipart import MIMEMultipart
+from email.mime.base import MIMEBase
+from email.mime.text import MIMEText
+from email.mime.application import MIMEApplication
+from time import sleep
+from tqdm.auto import tqdm
+
+
+def get_resource(name):
+    return pkgutil.get_data(__package__, 'resources/' + name)
+
+
+class WelcomeMailSender:
+    def __init__(self, username, password):
+        self.username = username
+        self.password = password
+
+        text = get_resource('welcome_mail.txt').decode('utf-8')
+        html = get_resource('welcome_mail.html').decode('utf-8')
+
+        text_part = MIMEText(text, 'plain')
+        html_part = MIMEText(html, 'html')
+
+        self._msg_alternative = MIMEMultipart('alternative')
+        self._msg_alternative.attach(text_part)
+        self._msg_alternative.attach(html_part)
+
+        filename = 'StaPaMailingList.pdf'
+        attachment = get_resource(filename)
+        self._msg_attachment = MIMEApplication(attachment, _subtype="pdf")
+        self._msg_attachment.add_header('Content-Disposition', 'attachment',
+                                        filename=filename)
+
+    def prepare_msg(self, to):
+        msg_mixed = MIMEMultipart('mixed')
+        msg_mixed.attach(self._msg_alternative)
+        msg_mixed.attach(self._msg_attachment)
+        msg_mixed['From'] = 'StaPa <stapa@pasteur.fr>'
+        msg_mixed['To'] = to
+        msg_mixed['Subject'] = '🎉 Welcome to the StaPa mailing list!'
+        return msg_mixed
+
+    def send_mails(self, emails):
+        s = SMTP(host='email.pasteur.fr', port=587)
+        s.starttls()
+        s.login(self.username + "@pasteur.fr", self.password)
+
+        for email in tqdm(emails):
+            msg = self.prepare_msg(email)
+            s.sendmail(msg['From'], msg['To'], msg.as_string())
+            sleep(1)