diff --git a/.gitignore b/.gitignore
index bce2c73..1814944 100644
--- a/.gitignore
+++ b/.gitignore
@@ -130,5 +130,7 @@ stage*.ini
 dev*.ini
 
 # Private samples
+samples/private
 
-samples/private
\ No newline at end of file
+*.html
+*.sqlite-journal
diff --git a/parsedmarc/resources/senders/senders.sqlite b/parsedmarc/resources/senders/senders.sqlite
index e69de29..2069208 100644
Binary files a/parsedmarc/resources/senders/senders.sqlite and b/parsedmarc/resources/senders/senders.sqlite differ
diff --git a/parsedmarc/resources/senders/updatedb.py b/parsedmarc/resources/senders/updatedb.py
index 65c4052..ea34221 100644
--- a/parsedmarc/resources/senders/updatedb.py
+++ b/parsedmarc/resources/senders/updatedb.py
@@ -1,9 +1,40 @@
-import urllib.parse
 import sqlite3
 
 from bs4 import BeautifulSoup
 
-dmarc_io = "https://dmarc.io"
+
+db = sqlite3.connect("senders.sqlite")
+db.execute("""
+CREATE TABLE IF NOT EXISTS "senders" (
+    "id" INTEGER UNIQUE NOT NULL,
+    "name" TEXT UNIQUE NOT NULL,
+    "spf_aligned" INTEGER,
+    "dkim_aligned" INTEGER,
+    "known_to_forward" INTEGER,
+    "forward_dkim_intact" INTEGER,
+    "forward_own_envelope_domain" INTEGER,
+    "support_url" TEXT,
+    "dmarc_io_uri" TEXT UNIQUE,
+    PRIMARY KEY("id" AUTOINCREMENT),
+    CHECK("spf_aligned" = 0 or "spf_aligned" = 1),
+    CHECK("dkim_aligned" = 0 or "dkim_aligned" = 1),
+    CHECK("known_to_forward" = 0 or "known_to_forward" = 1),
+    CHECK("forward_dkim_intact" = 0 or "forward_dkim_intact" = 1),
+    CHECK(
+    "forward_own_envelope_domain" = 0 or "forward_own_envelope_domain" = 1
+    )
+)
+""")
+db.execute("""
+CREATE TABLE IF NOT EXISTS "reverse_dns" (
+    "id" INTEGER UNIQUE NOT NULL,
+    "base_domain" TEXT UNIQUE NOT NULL,
+    "sender_id" INTEGER NOT NULL,
+    PRIMARY KEY("id" AUTOINCREMENT),
+    FOREIGN KEY(sender_id) REFERENCES senders(id)
+)
+""")
+curser = db.cursor()
 with open("sources.html") as sources_file:
     content = sources_file.read()
 soup = BeautifulSoup(content, "html.parser")
@@ -13,7 +44,20 @@ for row in rows:
     data = row.find_all("td")
     link = data[0].find("a")
     name = link.text
-    dmarc_io_url = urllib.parse.urljoin(dmarc_io, link.get("href"))
+    dmarc_io_uri = link.get("href")
     spf_aligned = len(data[1].find_all("i"))
     dkim_aligned = len(data[2].find_all("i"))
-    print(name)
+    params = (name, spf_aligned, dkim_aligned, 0,
+              dmarc_io_uri)
+    curser.execute("""
+    UPDATE senders
+    SET name = ?,
+        spf_aligned = ?,
+        dkim_aligned = ?,
+        known_to_forward = ?
+    WHERE dmarc_io_uri = ?""", params)
+    db.commit()
+    curser.execute("""
+    INSERT OR IGNORE INTO senders(name, spf_aligned, dkim_aligned,
+    known_to_forward, dmarc_io_uri) values (?,?,?,?,?)""", params)
+    db.commit()
diff --git a/requirements.txt b/requirements.txt
index ac19106..30dfa3f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,3 +38,5 @@ google-auth-oauthlib>=0.4.6
 hatch>=1.5.0
 myst-parser>=0.18.0
 myst-parser[linkify]
+requests
+bs4